57450861 has 24 divisors (see below), whose sum is σ = 89707800. Its totient is φ = 35220096.

The previous prime is 57450847. The next prime is 57450893. The reversal of 57450861 is 16805475.

57450861 is a `hidden beast` number, since 574 + 5 + 0 + 86 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1425636 + 56025225 = 1194^2 + 7485^2 .

It is not a de Polignac number, because 57450861 - 2⁵ = 57450829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57450461) 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, 36315 + ... + 37863.

It is an arithmetic number, because the mean of its divisors is an integer number (3737825).

Almost surely, 2^57450861 is an apocalyptic number.

It is an amenable number.

57450861 is a deficient number, since it is larger than the sum of its proper divisors (32256939).

57450861 is a wasteful number, since it uses less digits than its factorization.

57450861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885 (or 1882 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 57450861 is about 7579.6346218007. The cubic root of 57450861 is about 385.8621506568.

It can be divided in two parts, 57450 and 861, that added together give a triangular number (58311 = T₃₄₁).

The spelling of 57450861 in words is "fifty-seven million, four hundred fifty thousand, eight hundred sixty-one".