57672261 has 6 divisors (see below), whose sum is σ = 83304390. Its totient is φ = 38448168.

The previous prime is 57672257. The next prime is 57672283. The reversal of 57672261 is 16227675.

57672261 is a `hidden beast` number, since 576 + 7 + 22 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32421636 + 25250625 = 5694^2 + 5025^2 .

It is not a de Polignac number, because 57672261 - 2² = 57672257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57672061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3204006 + ... + 3204023.

It is an arithmetic number, because the mean of its divisors is an integer number (13884065).

Almost surely, 2^57672261 is an apocalyptic number.

It is an amenable number.

57672261 is a deficient number, since it is larger than the sum of its proper divisors (25632129).

57672261 is a wasteful number, since it uses less digits than its factorization.

57672261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408035 (or 6408032 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 57672261 is about 7594.2255036310. The cubic root of 57672261 is about 386.3571845684.

The spelling of 57672261 in words is "fifty-seven million, six hundred seventy-two thousand, two hundred sixty-one".