57256875 has 120 divisors (see below), whose sum is σ = 119399280. Its totient is φ = 27216000.

The previous prime is 57256853. The next prime is 57256921. The reversal of 57256875 is 57865275.

57256875 is a `hidden beast` number, since 572 + 5 + 6 + 8 + 75 = 666.

It is not a de Polignac number, because 57256875 - 2¹⁰ = 57255851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (588000) is a multiple of the sum of its prime divisors (50).

It is a self number, because there is not a number n which added to its sum of digits gives 57256875.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1974361 + ... + 1974389.

It is an arithmetic number, because the mean of its divisors is an integer number (994994).

It is a vampire number, since it can be written as 6525 ⋅ 8775 (with its own digits).

Almost surely, 2^57256875 is an apocalyptic number.

57256875 is an abundant number, since it is smaller than the sum of its proper divisors (62142405).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57256875 is an equidigital number, since it uses as much as digits as its factorization.

57256875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 50 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 57256875 is about 7566.8272743601. The cubic root of 57256875 is about 385.4273659882.

Adding to 57256875 its product of digits (588000), we get a palindrome (57844875).

Subtracting 57256875 from its reverse (57865275), we obtain a square (608400 = 780²).

The spelling of 57256875 in words is "fifty-seven million, two hundred fifty-six thousand, eight hundred seventy-five".