55287496631 has 4 divisors (see below), whose sum is σ = 55318929600. Its totient is φ = 55256063664.

The previous prime is 55287496619. The next prime is 55287496637. The reversal of 55287496631 is 13669478255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13669478255 = 5 ⋅2733895651.

It is a cyclic number.

It is not a de Polignac number, because 55287496631 - 2²⁶ = 55220387767 is a prime.

It is a super-2 number, since 2×55287496631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55287496637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15713846 + ... + 15717363.

It is an arithmetic number, because the mean of its divisors is an integer number (13829732400).

Almost surely, 2^55287496631 is an apocalyptic number.

55287496631 is a deficient number, since it is larger than the sum of its proper divisors (31432969).

55287496631 is a wasteful number, since it uses less digits than its factorization.

55287496631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31432968.

The product of its digits is 10886400, while the sum is 56.

The spelling of 55287496631 in words is "fifty-five billion, two hundred eighty-seven million, four hundred ninety-six thousand, six hundred thirty-one".