55533731274631 has 2 divisors, whose sum is σ = 55533731274632. Its totient is φ = 55533731274630.

The previous prime is 55533731274557. The next prime is 55533731274667. The reversal of 55533731274631 is 13647213733555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55533731274631 - 2¹³ = 55533731266439 is a prime.

It is a super-2 number, since 2×55533731274631² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55533731274431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27766865637315 + 27766865637316.

It is an arithmetic number, because the mean of its divisors is an integer number (27766865637316).

Almost surely, 2^{55533731274631} is an apocalyptic number.

55533731274631 is a deficient number, since it is larger than the sum of its proper divisors (1).

55533731274631 is an equidigital number, since it uses as much as digits as its factorization.

55533731274631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23814000, while the sum is 55.

The spelling of 55533731274631 in words is "fifty-five trillion, five hundred thirty-three billion, seven hundred thirty-one million, two hundred seventy-four thousand, six hundred thirty-one".