55262513521 has 2 divisors, whose sum is σ = 55262513522. Its totient is φ = 55262513520.

The previous prime is 55262513497. The next prime is 55262513573. The reversal of 55262513521 is 12531526255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36466103521 + 18796410000 = 190961^2 + 137100^2 .

It is a cyclic number.

It is not a de Polignac number, because 55262513521 - 2⁷ = 55262513393 is a prime.

It is not a weakly prime, because it can be changed into another prime (55262513321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27631256760 + 27631256761.

It is an arithmetic number, because the mean of its divisors is an integer number (27631256761).

Almost surely, 2^55262513521 is an apocalyptic number.

It is an amenable number.

55262513521 is a deficient number, since it is larger than the sum of its proper divisors (1).

55262513521 is an equidigital number, since it uses as much as digits as its factorization.

55262513521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90000, while the sum is 37.

The spelling of 55262513521 in words is "fifty-five billion, two hundred sixty-two million, five hundred thirteen thousand, five hundred twenty-one".