55424525521 has 2 divisors, whose sum is σ = 55424525522. Its totient is φ = 55424525520.

The previous prime is 55424525509. The next prime is 55424525537. The reversal of 55424525521 is 12552542455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55253203600 + 171321921 = 235060^2 + 13089^2 .

It is a cyclic number.

It is not a de Polignac number, because 55424525521 - 2²³ = 55416136913 is a prime.

It is not a weakly prime, because it can be changed into another prime (55424525581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27712262760 + 27712262761.

It is an arithmetic number, because the mean of its divisors is an integer number (27712262761).

Almost surely, 2^55424525521 is an apocalyptic number.

It is an amenable number.

55424525521 is a deficient number, since it is larger than the sum of its proper divisors (1).

55424525521 is an equidigital number, since it uses as much as digits as its factorization.

55424525521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 400000, while the sum is 40.

The spelling of 55424525521 in words is "fifty-five billion, four hundred twenty-four million, five hundred twenty-five thousand, five hundred twenty-one".