55315875631 has 2 divisors, whose sum is σ = 55315875632. Its totient is φ = 55315875630.

The previous prime is 55315875611. The next prime is 55315875653. The reversal of 55315875631 is 13657851355.

55315875631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55315875631 - 2¹¹ = 55315873583 is a prime.

It is a super-2 number, since 2×55315875631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55315875611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27657937815 + 27657937816.

It is an arithmetic number, because the mean of its divisors is an integer number (27657937816).

Almost surely, 2^55315875631 is an apocalyptic number.

55315875631 is a deficient number, since it is larger than the sum of its proper divisors (1).

55315875631 is an equidigital number, since it uses as much as digits as its factorization.

55315875631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890000, while the sum is 49.

The spelling of 55315875631 in words is "fifty-five billion, three hundred fifteen million, eight hundred seventy-five thousand, six hundred thirty-one".