56111539 has 4 divisors (see below), whose sum is σ = 61212600. Its totient is φ = 51010480.

The previous prime is 56111533. The next prime is 56111591. The reversal of 56111539 is 93511165.

56111539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56111539 - 2⁵ = 56111507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56111539.

It is not an unprimeable number, because it can be changed into a prime (56111533) 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 3 ways as a sum of consecutive naturals, for example, 2550514 + ... + 2550535.

It is an arithmetic number, because the mean of its divisors is an integer number (15303150).

Almost surely, 2^56111539 is an apocalyptic number.

56111539 is a deficient number, since it is larger than the sum of its proper divisors (5101061).

56111539 is a wasteful number, since it uses less digits than its factorization.

56111539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101060.

The product of its digits is 4050, while the sum is 31.

The square root of 56111539 is about 7490.7635792354. The cubic root of 56111539 is about 382.8400757556.

It can be divided in two parts, 561 and 11539, that added together give a square (12100 = 110²).

The spelling of 56111539 in words is "fifty-six million, one hundred eleven thousand, five hundred thirty-nine".