5655255521 has 2 divisors, whose sum is σ = 5655255522. Its totient is φ = 5655255520.

The previous prime is 5655255499. The next prime is 5655255601. The reversal of 5655255521 is 1255525565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3852064225 + 1803191296 = 62065^2 + 42464^2 .

It is a cyclic number.

It is not a de Polignac number, because 5655255521 - 2¹⁰ = 5655254497 is a prime.

It is not a weakly prime, because it can be changed into another prime (5655251521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2827627760 + 2827627761.

It is an arithmetic number, because the mean of its divisors is an integer number (2827627761).

Almost surely, 2^5655255521 is an apocalyptic number.

It is an amenable number.

5655255521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5655255521 is an equidigital number, since it uses as much as digits as its factorization.

5655255521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 375000, while the sum is 41.

The square root of 5655255521 is about 75201.4329717194. The cubic root of 5655255521 is about 1781.6295644918.

The spelling of 5655255521 in words is "five billion, six hundred fifty-five million, two hundred fifty-five thousand, five hundred twenty-one".