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2907025 = 52112312
BaseRepresentation
bin1011000101101110010001
312110200200121
423011232101
51221011100
6142150241
733465202
oct13055621
95420617
102907025
111706100
12b82381
137aa244
145595a9
153c651a
hex2c5b91

2907025 has 27 divisors (see below), whose sum is σ = 4094139. Its totient is φ = 2046000.

The previous prime is 2907013. The next prime is 2907029. The reversal of 2907025 is 5207092.

The square root of 2907025 is 1705.

It is a perfect power (a square), and thus also a powerful number.

2907025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1046529 + 1860496 = 1023^2 + 1364^2 .

It is not a de Polignac number, because 2907025 - 29 = 2906513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

2907025 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2907029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 93760 + ... + 93790.

22907025 is an apocalyptic number.

2907025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2907025 is the 1705-th square number.

2907025 is the 853-rd centered octagonal number.

It is an amenable number.

2907025 is a deficient number, since it is larger than the sum of its proper divisors (1187114).

2907025 is a wasteful number, since it uses less digits than its factorization.

2907025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The cubic root of 2907025 is about 142.7193707461.

Multiplying 2907025 by its sum of digits (25), we get a square (72675625 = 85252).

2907025 divided by its sum of digits (25) gives a square (116281 = 3412).

The spelling of 2907025 in words is "two million, nine hundred seven thousand, twenty-five".

Divisors: 1 5 11 25 31 55 121 155 275 341 605 775 961 1705 3025 3751 4805 8525 10571 18755 24025 52855 93775 116281 264275 581405 2907025