57256975 has 24 divisors (see below), whose sum is σ = 75330000. Its totient is φ = 43050240.

The previous prime is 57256973. The next prime is 57257009. The reversal of 57256975 is 57965275.

It is not a de Polignac number, because 57256975 - 2¹ = 57256973 is a prime.

It is a super-2 number, since 2×57256975² = 6556722372301250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57256973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70371 + ... + 71179.

It is an arithmetic number, because the mean of its divisors is an integer number (3138750).

Almost surely, 2^57256975 is an apocalyptic number.

57256975 is the 4045-th nonagonal number.

57256975 is a deficient number, since it is larger than the sum of its proper divisors (18073025).

57256975 is a wasteful number, since it uses less digits than its factorization.

57256975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 982 counting only the distinct ones).

The product of its digits is 661500, while the sum is 46.

The square root of 57256975 is about 7566.8338821465. The cubic root of 57256975 is about 385.4275903730.

The spelling of 57256975 in words is "fifty-seven million, two hundred fifty-six thousand, nine hundred seventy-five".