56139959 has 2 divisors, whose sum is σ = 56139960. Its totient is φ = 56139958.

The previous prime is 56139953. The next prime is 56139991. The reversal of 56139959 is 95993165.

56139959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56139959 - 2¹⁶ = 56074423 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56139953) 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 as a sum of consecutive naturals, namely, 28069979 + 28069980.

It is an arithmetic number, because the mean of its divisors is an integer number (28069980).

Almost surely, 2^56139959 is an apocalyptic number.

56139959 is a deficient number, since it is larger than the sum of its proper divisors (1).

56139959 is an equidigital number, since it uses as much as digits as its factorization.

56139959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 328050, while the sum is 47.

The square root of 56139959 is about 7492.6603419613. The cubic root of 56139959 is about 382.9046998878.

The spelling of 56139959 in words is "fifty-six million, one hundred thirty-nine thousand, nine hundred fifty-nine".