55222254022561 has 2 divisors, whose sum is σ = 55222254022562. Its totient is φ = 55222254022560.

The previous prime is 55222254022489. The next prime is 55222254022589. The reversal of 55222254022561 is 16522045222255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55218274810000 + 3979212561 = 7430900^2 + 63081^2 .

It is a cyclic number.

It is not a de Polignac number, because 55222254022561 - 2²⁷ = 55222119804833 is a prime.

It is not a weakly prime, because it can be changed into another prime (55222254022361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27611127011280 + 27611127011281.

It is an arithmetic number, because the mean of its divisors is an integer number (27611127011281).

Almost surely, 2^{55222254022561} is an apocalyptic number.

It is an amenable number.

55222254022561 is a deficient number, since it is larger than the sum of its proper divisors (1).

55222254022561 is an equidigital number, since it uses as much as digits as its factorization.

55222254022561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960000, while the sum is 43.

The spelling of 55222254022561 in words is "fifty-five trillion, two hundred twenty-two billion, two hundred fifty-four million, twenty-two thousand, five hundred sixty-one".