56639554 has 8 divisors (see below), whose sum is σ = 85149900. Its totient is φ = 28256256.

The previous prime is 56639549. The next prime is 56639591. The reversal of 56639554 is 45593665.

It can be written as a sum of positive squares in 2 ways, for example, as 51509329 + 5130225 = 7177^2 + 2265^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 56639554.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30639 + ... + 32434.

Almost surely, 2^56639554 is an apocalyptic number.

56639554 is a deficient number, since it is larger than the sum of its proper divisors (28510346).

56639554 is a wasteful number, since it uses less digits than its factorization.

56639554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63524.

The product of its digits is 486000, while the sum is 43.

The square root of 56639554 is about 7525.9254580417. The cubic root of 56639554 is about 384.0371826336.

The spelling of 56639554 in words is "fifty-six million, six hundred thirty-nine thousand, five hundred fifty-four".