56813906 has 8 divisors (see below), whose sum is σ = 85254780. Its totient is φ = 28395648.

The previous prime is 56813899. The next prime is 56813921. The reversal of 56813906 is 60931865.

56813906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 55636681 + 1177225 = 7459^2 + 1085^2 .

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 56813906.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3770 + ... + 11306.

Almost surely, 2^56813906 is an apocalyptic number.

It is a pronic number, being equal to 7537×7538.

56813906 is a deficient number, since it is larger than the sum of its proper divisors (28440874).

56813906 is a wasteful number, since it uses less digits than its factorization.

56813906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11308.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 56813906 is about 7537.4999834163. The cubic root of 56813906 is about 384.4308360598.

The spelling of 56813906 in words is "fifty-six million, eight hundred thirteen thousand, nine hundred six".