56220641 has 4 divisors (see below), whose sum is σ = 56273172. Its totient is φ = 56168112.

The previous prime is 56220623. The next prime is 56220643. The reversal of 56220641 is 14602265.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14602265 = 5 ⋅2920453.

It can be written as a sum of positive squares in 2 ways, for example, as 55056400 + 1164241 = 7420^2 + 1079^2 .

It is a cyclic number.

It is not a de Polignac number, because 56220641 - 2¹⁴ = 56204257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56220641.

It is not an unprimeable number, because it can be changed into a prime (56220643) 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, 24626 + ... + 26811.

It is an arithmetic number, because the mean of its divisors is an integer number (14068293).

Almost surely, 2^56220641 is an apocalyptic number.

It is an amenable number.

56220641 is a deficient number, since it is larger than the sum of its proper divisors (52531).

56220641 is a wasteful number, since it uses less digits than its factorization.

56220641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52530.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 56220641 is about 7498.0424778738. The cubic root of 56220641 is about 383.0880436221.

The spelling of 56220641 in words is "fifty-six million, two hundred twenty thousand, six hundred forty-one".