56139099 has 16 divisors (see below), whose sum is σ = 78597120. Its totient is φ = 35592480.

The previous prime is 56139089. The next prime is 56139131. The reversal of 56139099 is 99093165.

It is not a de Polignac number, because 56139099 - 2⁸ = 56138843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56139099.

It is not an unprimeable number, because it can be changed into a prime (56139079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1014 + ... + 10644.

It is an arithmetic number, because the mean of its divisors is an integer number (4912320).

Almost surely, 2^56139099 is an apocalyptic number.

56139099 is a deficient number, since it is larger than the sum of its proper divisors (22458021).

56139099 is a wasteful number, since it uses less digits than its factorization.

56139099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9730.

The product of its (nonzero) digits is 65610, while the sum is 42.

The square root of 56139099 is about 7492.6029522456. The cubic root of 56139099 is about 382.9027446570.

The spelling of 56139099 in words is "fifty-six million, one hundred thirty-nine thousand, ninety-nine".