656557452 has 36 divisors (see below), whose sum is σ = 1704489696. Its totient is φ = 212937120.

The previous prime is 656557399. The next prime is 656557507. The reversal of 656557452 is 254755656.

656557452 is a `hidden beast` number, since 6 + 56 + 557 + 45 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 656557398 and 656557407.

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, 245124 + ... + 247787.

It is an arithmetic number, because the mean of its divisors is an integer number (47346936).

Almost surely, 2^656557452 is an apocalyptic number.

It is an amenable number.

656557452 is an abundant number, since it is smaller than the sum of its proper divisors (1047932244).

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

656557452 is a wasteful number, since it uses less digits than its factorization.

656557452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492958 (or 492953 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 45.

The square root of 656557452 is about 25623.3770608013. The cubic root of 656557452 is about 869.1423494109.

The spelling of 656557452 in words is "six hundred fifty-six million, five hundred fifty-seven thousand, four hundred fifty-two".