56321659 has 16 divisors (see below), whose sum is σ = 59907456. Its totient is φ = 52876800.

The previous prime is 56321647. The next prime is 56321693. The reversal of 56321659 is 95612365.

It is a cyclic number.

It is not a de Polignac number, because 56321659 - 2⁵ = 56321627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

Its product of digits (48600) is a multiple of the sum of its prime divisors (486).

It is not an unprimeable number, because it can be changed into a prime (56321059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207694 + ... + 207964.

It is an arithmetic number, because the mean of its divisors is an integer number (3744216).

Almost surely, 2^56321659 is an apocalyptic number.

56321659 is a deficient number, since it is larger than the sum of its proper divisors (3585797).

56321659 is a wasteful number, since it uses less digits than its factorization.

56321659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486.

The product of its digits is 48600, while the sum is 37.

The square root of 56321659 is about 7504.7757461499. The cubic root of 56321659 is about 383.3173522428.

It can be divided in two parts, 563 and 21659, that added together give a palindrome (22222).

The spelling of 56321659 in words is "fifty-six million, three hundred twenty-one thousand, six hundred fifty-nine".