57455478 has 24 divisors (see below), whose sum is σ = 131810328. Its totient is φ = 18025152.

The previous prime is 57455459. The next prime is 57455483. The reversal of 57455478 is 87455475.

57455478 is a `hidden beast` number, since 574 + 5 + 5 + 4 + 78 = 666.

It is a super-2 number, since 2×57455478² = 6602263904416968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93576 + ... + 94187.

It is an arithmetic number, because the mean of its divisors is an integer number (5492097).

Almost surely, 2^57455478 is an apocalyptic number.

57455478 is an abundant number, since it is smaller than the sum of its proper divisors (74354850).

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

57455478 is a wasteful number, since it uses less digits than its factorization.

57455478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187788 (or 187785 counting only the distinct ones).

The product of its digits is 784000, while the sum is 45.

The square root of 57455478 is about 7579.9391818141. The cubic root of 57455478 is about 385.8724868978.

It can be divided in two parts, 57 and 455478, that added together give a triangular number (455535 = T₉₅₄).

The spelling of 57455478 in words is "fifty-seven million, four hundred fifty-five thousand, four hundred seventy-eight".