57612257 has 8 divisors (see below), whose sum is σ = 59829000. Its totient is φ = 55434240.

The previous prime is 57612253. The next prime is 57612283. The reversal of 57612257 is 75221675.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5180176 + 52432081 = 2276^2 + 7241^2 .

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 57612257 - 2² = 57612253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57612253) 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, 6632 + ... + 12617.

It is an arithmetic number, because the mean of its divisors is an integer number (7478625).

Almost surely, 2^57612257 is an apocalyptic number.

It is an amenable number.

57612257 is a deficient number, since it is larger than the sum of its proper divisors (2216743).

57612257 is a wasteful number, since it uses less digits than its factorization.

57612257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19363.

The product of its digits is 29400, while the sum is 35.

The square root of 57612257 is about 7590.2738422273. The cubic root of 57612257 is about 386.2231454258.

The spelling of 57612257 in words is "fifty-seven million, six hundred twelve thousand, two hundred fifty-seven".