56205990 has 48 divisors (see below), whose sum is σ = 153831600. Its totient is φ = 14198976.

The previous prime is 56205913. The next prime is 56205991. The reversal of 56205990 is 9950265.

56205990 is a `hidden beast` number, since 5 + 62 + 0 + 599 + 0 = 666.

56205990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56205990² = 6318226623760200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56205991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14725 + ... + 18144.

It is an arithmetic number, because the mean of its divisors is an integer number (3204825).

Almost surely, 2^56205990 is an apocalyptic number.

56205990 is an abundant number, since it is smaller than the sum of its proper divisors (97625610).

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

56205990 is a wasteful number, since it uses less digits than its factorization.

56205990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32901 (or 32898 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 56205990 is about 7497.0654258850. The cubic root of 56205990 is about 383.0547633746.

The spelling of 56205990 in words is "fifty-six million, two hundred five thousand, nine hundred ninety".