57256285 has 4 divisors (see below), whose sum is σ = 68707548. Its totient is φ = 45805024.

The previous prime is 57256249. The next prime is 57256321. The reversal of 57256285 is 58265275.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (57256249) and next prime (57256321).

It can be written as a sum of positive squares in 2 ways, for example, as 41550916 + 15705369 = 6446^2 + 3963^2 .

It is a cyclic number.

It is not a de Polignac number, because 57256285 - 2¹¹ = 57254237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5725624 + ... + 5725633.

It is an arithmetic number, because the mean of its divisors is an integer number (17176887).

Almost surely, 2^57256285 is an apocalyptic number.

It is an amenable number.

57256285 is a deficient number, since it is larger than the sum of its proper divisors (11451263).

57256285 is a wasteful number, since it uses less digits than its factorization.

57256285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11451262.

The product of its digits is 168000, while the sum is 40.

The square root of 57256285 is about 7566.7882883030. The cubic root of 57256285 is about 385.4260421127.

The spelling of 57256285 in words is "fifty-seven million, two hundred fifty-six thousand, two hundred eighty-five".