55802631 has 4 divisors (see below), whose sum is σ = 74403512. Its totient is φ = 37201752.

The previous prime is 55802627. The next prime is 55802647. The reversal of 55802631 is 13620855.

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

It is not a de Polignac number, because 55802631 - 2² = 55802627 is a prime.

It is a super-2 number, since 2×55802631² = 6227867253044322, which 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 (55802611) 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, 9300436 + ... + 9300441.

It is an arithmetic number, because the mean of its divisors is an integer number (18600878).

Almost surely, 2^55802631 is an apocalyptic number.

55802631 is a deficient number, since it is larger than the sum of its proper divisors (18600881).

55802631 is a wasteful number, since it uses less digits than its factorization.

55802631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18600880.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 55802631 is about 7470.1158625553. The cubic root of 55802631 is about 382.1362392442.

The spelling of 55802631 in words is "fifty-five million, eight hundred two thousand, six hundred thirty-one".