56335621 has 4 divisors (see below), whose sum is σ = 56380032. Its totient is φ = 56291212.

The previous prime is 56335577. The next prime is 56335651. The reversal of 56335621 is 12653365.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56335621 - 2¹⁷ = 56204549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56335651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20245 + ... + 22858.

It is an arithmetic number, because the mean of its divisors is an integer number (14095008).

Almost surely, 2^56335621 is an apocalyptic number.

It is an amenable number.

56335621 is a deficient number, since it is larger than the sum of its proper divisors (44411).

56335621 is a wasteful number, since it uses less digits than its factorization.

56335621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44410.

The product of its digits is 16200, while the sum is 31.

The square root of 56335621 is about 7505.7058961832. The cubic root of 56335621 is about 383.3490241004.

Adding to 56335621 its reverse (12653365), we get a palindrome (68988986).

The spelling of 56335621 in words is "fifty-six million, three hundred thirty-five thousand, six hundred twenty-one".