56551658 has 4 divisors (see below), whose sum is σ = 84827490. Its totient is φ = 28275828.

The previous prime is 56551613. The next prime is 56551699. The reversal of 56551658 is 85615565.

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

It can be written as a sum of positive squares in only one way, i.e., 33097009 + 23454649 = 5753^2 + 4843^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14137913 + ... + 14137916.

Almost surely, 2^56551658 is an apocalyptic number.

56551658 is a deficient number, since it is larger than the sum of its proper divisors (28275832).

56551658 is a wasteful number, since it uses less digits than its factorization.

56551658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28275831.

The product of its digits is 180000, while the sum is 41.

The square root of 56551658 is about 7520.0836431518. The cubic root of 56551658 is about 383.8384239573.

The spelling of 56551658 in words is "fifty-six million, five hundred fifty-one thousand, six hundred fifty-eight".