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2561172 = 223534027
BaseRepresentation
bin1001110001010010010100
311211010021020
421301102110
51123424142
6130521140
730524655
oct11612224
94733236
102561172
11149a279
12a361b0
136b89b3
144a952c
15358cec
hex271494

2561172 has 24 divisors (see below), whose sum is σ = 6090336. Its totient is φ = 837408.

The previous prime is 2561159. The next prime is 2561179. The reversal of 2561172 is 2711652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1378 + ... + 2649.

It is an arithmetic number, because the mean of its divisors is an integer number (253764).

22561172 is an apocalyptic number.

It is an amenable number.

2561172 is an abundant number, since it is smaller than the sum of its proper divisors (3529164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2561172 is a wasteful number, since it uses less digits than its factorization.

2561172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087 (or 4085 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 2561172 is about 1600.3662080911. The cubic root of 2561172 is about 136.8189485055.

The spelling of 2561172 in words is "two million, five hundred sixty-one thousand, one hundred seventy-two".

Divisors: 1 2 3 4 6 12 53 106 159 212 318 636 4027 8054 12081 16108 24162 48324 213431 426862 640293 853724 1280586 2561172