55501365331 has 2 divisors, whose sum is σ = 55501365332. Its totient is φ = 55501365330.

The previous prime is 55501365289. The next prime is 55501365427. The reversal of 55501365331 is 13356310555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55501365331 - 2¹¹ = 55501363283 is a prime.

It is a super-2 number, since 2×55501365331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55501365131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27750682665 + 27750682666.

It is an arithmetic number, because the mean of its divisors is an integer number (27750682666).

Almost surely, 2^55501365331 is an apocalyptic number.

55501365331 is a deficient number, since it is larger than the sum of its proper divisors (1).

55501365331 is an equidigital number, since it uses as much as digits as its factorization.

55501365331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 101250, while the sum is 37.

Adding to 55501365331 its reverse (13356310555), we get a palindrome (68857675886).

The spelling of 55501365331 in words is "fifty-five billion, five hundred one million, three hundred sixty-five thousand, three hundred thirty-one".