56556506 has 4 divisors (see below), whose sum is σ = 84834762. Its totient is φ = 28278252.

The previous prime is 56556491. The next prime is 56556523. The reversal of 56556506 is 60565565.

It is a happy number.

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., 48094225 + 8462281 = 6935^2 + 2909^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56556506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14139125 + ... + 14139128.

Almost surely, 2^56556506 is an apocalyptic number.

56556506 is a deficient number, since it is larger than the sum of its proper divisors (28278256).

56556506 is a wasteful number, since it uses less digits than its factorization.

56556506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28278255.

The product of its (nonzero) digits is 135000, while the sum is 38.

The square root of 56556506 is about 7520.4059730842. The cubic root of 56556506 is about 383.8493920738.

The spelling of 56556506 in words is "fifty-six million, five hundred fifty-six thousand, five hundred six".