56161539 has 16 divisors (see below), whose sum is σ = 95088640. Its totient is φ = 32092200.

The previous prime is 56161537. The next prime is 56161543. The reversal of 56161539 is 93516165.

56161539 is a `hidden beast` number, since 5 + 6 + 1 + 615 + 39 = 666.

56161539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56161539 - 2¹ = 56161537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56161531) 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 15 ways as a sum of consecutive naturals, for example, 148387 + ... + 148764.

It is an arithmetic number, because the mean of its divisors is an integer number (5943040).

Almost surely, 2^56161539 is an apocalyptic number.

56161539 is a deficient number, since it is larger than the sum of its proper divisors (38927101).

56161539 is a wasteful number, since it uses less digits than its factorization.

56161539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297167 (or 297161 counting only the distinct ones).

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

The square root of 56161539 is about 7494.1002795532. The cubic root of 56161539 is about 382.9537560030.

The spelling of 56161539 in words is "fifty-six million, one hundred sixty-one thousand, five hundred thirty-nine".