57461778 has 32 divisors (see below), whose sum is σ = 139302720. Its totient is φ = 17412480.

The previous prime is 57461759. The next prime is 57461779. The reversal of 57461778 is 87716475.

57461778 is a `hidden beast` number, since 574 + 6 + 1 + 7 + 78 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (57461779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47775 + ... + 48962.

It is an arithmetic number, because the mean of its divisors is an integer number (4353210).

Almost surely, 2^57461778 is an apocalyptic number.

57461778 is an abundant number, since it is smaller than the sum of its proper divisors (81840942).

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

57461778 is a wasteful number, since it uses less digits than its factorization.

57461778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96759 (or 96753 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The square root of 57461778 is about 7580.3547410395. The cubic root of 57461778 is about 385.8865900370.

The spelling of 57461778 in words is "fifty-seven million, four hundred sixty-one thousand, seven hundred seventy-eight".