56136489 has 16 divisors (see below), whose sum is σ = 78499200. Its totient is φ = 35634816.

The previous prime is 56136481. The next prime is 56136497. The reversal of 56136489 is 98463165.

It is an interprime number because it is at equal distance from previous prime (56136481) and next prime (56136497).

It is not a de Polignac number, because 56136489 - 2³ = 56136481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56136489.

It is not an unprimeable number, because it can be changed into a prime (56136481) 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, 1932 + ... + 10770.

It is an arithmetic number, because the mean of its divisors is an integer number (4906200).

Almost surely, 2^56136489 is an apocalyptic number.

It is an amenable number.

56136489 is a deficient number, since it is larger than the sum of its proper divisors (22362711).

56136489 is a wasteful number, since it uses less digits than its factorization.

56136489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8944.

The product of its digits is 155520, while the sum is 42.

The square root of 56136489 is about 7492.4287784403. The cubic root of 56136489 is about 382.8968106368.

The spelling of 56136489 in words is "fifty-six million, one hundred thirty-six thousand, four hundred eighty-nine".