55112533631 has 4 divisors (see below), whose sum is σ = 58354447392. Its totient is φ = 51870619872.

The previous prime is 55112533591. The next prime is 55112533661. The reversal of 55112533631 is 13633521155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55112533631 is a prime.

It is a super-2 number, since 2×55112533631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55112533591 and 55112533600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55112533661) 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, 1620956855 + ... + 1620956888.

It is an arithmetic number, because the mean of its divisors is an integer number (14588611848).

Almost surely, 2^55112533631 is an apocalyptic number.

55112533631 is a deficient number, since it is larger than the sum of its proper divisors (3241913761).

55112533631 is a wasteful number, since it uses less digits than its factorization.

55112533631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241913760.

The product of its digits is 40500, while the sum is 35.

The spelling of 55112533631 in words is "fifty-five billion, one hundred twelve million, five hundred thirty-three thousand, six hundred thirty-one".