57455251 has 4 divisors (see below), whose sum is σ = 65663152. Its totient is φ = 49247352.

The previous prime is 57455231. The next prime is 57455261. The reversal of 57455251 is 15255475.

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

It is not a de Polignac number, because 57455251 - 2¹³ = 57447059 is a prime.

It is a super-2 number, since 2×57455251² = 6602211734946002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57455201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4103940 + ... + 4103953.

It is an arithmetic number, because the mean of its divisors is an integer number (16415788).

Almost surely, 2^57455251 is an apocalyptic number.

57455251 is a deficient number, since it is larger than the sum of its proper divisors (8207901).

57455251 is an equidigital number, since it uses as much as digits as its factorization.

57455251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8207900.

The product of its digits is 35000, while the sum is 34.

The square root of 57455251 is about 7579.9242080644. The cubic root of 57455251 is about 385.8719787178.

The spelling of 57455251 in words is "fifty-seven million, four hundred fifty-five thousand, two hundred fifty-one".