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2065145 = 5537793
BaseRepresentation
bin111111000001011111001
310212220211212
413320023321
51012041040
6112132505
723360555
oct7701371
93786755
102065145
111190635
12837135
13573ca4
143ba865
152abd65
hex1f82f9

2065145 has 8 divisors (see below), whose sum is σ = 2525256. Its totient is φ = 1620736.

The previous prime is 2065121. The next prime is 2065153. The reversal of 2065145 is 5415602.

2065145 = T75 + T76 + ... + T233.

It can be written as a sum of positive squares in 4 ways, for example, as 958441 + 1106704 = 979^2 + 1052^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2065145 - 210 = 2064121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2065145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3632 + ... + 4161.

It is an arithmetic number, because the mean of its divisors is an integer number (315657).

22065145 is an apocalyptic number.

It is an amenable number.

2065145 is a deficient number, since it is larger than the sum of its proper divisors (460111).

2065145 is an equidigital number, since it uses as much as digits as its factorization.

2065145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7851.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2065145 is about 1437.0612373869. The cubic root of 2065145 is about 127.3454747216.

The spelling of 2065145 in words is "two million, sixty-five thousand, one hundred forty-five".

Divisors: 1 5 53 265 7793 38965 413029 2065145