56552222621 has 2 divisors, whose sum is σ = 56552222622. Its totient is φ = 56552222620.

The previous prime is 56552222609. The next prime is 56552222633. The reversal of 56552222621 is 12622225565.

It is a balanced prime because it is at equal distance from previous prime (56552222609) and next prime (56552222633).

It can be written as a sum of positive squares in only one way, i.e., 55136205721 + 1416016900 = 234811^2 + 37630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56552222621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56552222641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28276111310 + 28276111311.

It is an arithmetic number, because the mean of its divisors is an integer number (28276111311).

Almost surely, 2^56552222621 is an apocalyptic number.

It is an amenable number.

56552222621 is a deficient number, since it is larger than the sum of its proper divisors (1).

56552222621 is an equidigital number, since it uses as much as digits as its factorization.

56552222621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144000, while the sum is 38.

The spelling of 56552222621 in words is "fifty-six billion, five hundred fifty-two million, two hundred twenty-two thousand, six hundred twenty-one".