56822621 has 2 divisors, whose sum is σ = 56822622. Its totient is φ = 56822620.

The previous prime is 56822603. The next prime is 56822663. The reversal of 56822621 is 12622865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46389721 + 10432900 = 6811^2 + 3230^2 .

It is a cyclic number.

It is not a de Polignac number, because 56822621 - 2¹⁸ = 56560477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56812621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28411310 + 28411311.

It is an arithmetic number, because the mean of its divisors is an integer number (28411311).

Almost surely, 2^56822621 is an apocalyptic number.

It is an amenable number.

56822621 is a deficient number, since it is larger than the sum of its proper divisors (1).

56822621 is an equidigital number, since it uses as much as digits as its factorization.

56822621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 32.

The square root of 56822621 is about 7538.0780707021. The cubic root of 56822621 is about 384.4504917139.

The spelling of 56822621 in words is "fifty-six million, eight hundred twenty-two thousand, six hundred twenty-one".