56236389 has 16 divisors (see below), whose sum is σ = 83702784. Its totient is φ = 33289200.

The previous prime is 56236373. The next prime is 56236421. The reversal of 56236389 is 98363265.

56236389 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 56236389 - 2⁴ = 56236373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56236389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56236309) 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, 18397 + ... + 21234.

It is an arithmetic number, because the mean of its divisors is an integer number (5231424).

Almost surely, 2^56236389 is an apocalyptic number.

It is an amenable number.

56236389 is a deficient number, since it is larger than the sum of its proper divisors (27466395).

56236389 is a wasteful number, since it uses less digits than its factorization.

56236389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39688.

The product of its digits is 233280, while the sum is 42.

The square root of 56236389 is about 7499.0925451017. The cubic root of 56236389 is about 383.1238092958.

The spelling of 56236389 in words is "fifty-six million, two hundred thirty-six thousand, three hundred eighty-nine".