55453631 has 4 divisors (see below), whose sum is σ = 55509600. Its totient is φ = 55397664.

The previous prime is 55453591. The next prime is 55453691. The reversal of 55453631 is 13635455.

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

It is a cyclic number.

It is not a de Polignac number, because 55453631 - 2¹⁴ = 55437247 is a prime.

It is a super-2 number, since 2×55453631² = 6150210382168322, 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 (55453691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26471 + ... + 28488.

It is an arithmetic number, because the mean of its divisors is an integer number (13877400).

Almost surely, 2^55453631 is an apocalyptic number.

55453631 is a deficient number, since it is larger than the sum of its proper divisors (55969).

55453631 is a wasteful number, since it uses less digits than its factorization.

55453631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55968.

The product of its digits is 27000, while the sum is 32.

The square root of 55453631 is about 7446.7194790726. The cubic root of 55453631 is about 381.3379223540.

The spelling of 55453631 in words is "fifty-five million, four hundred fifty-three thousand, six hundred thirty-one".