55231839 has 12 divisors (see below), whose sum is σ = 85916376. Its totient is φ = 33988752.

The previous prime is 55231829. The next prime is 55231843. The reversal of 55231839 is 93813255.

It is not a de Polignac number, because 55231839 - 2⁷ = 55231711 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55231829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235917 + ... + 236150.

It is an arithmetic number, because the mean of its divisors is an integer number (7159698).

Almost surely, 2^55231839 is an apocalyptic number.

55231839 is a deficient number, since it is larger than the sum of its proper divisors (30684537).

55231839 is a wasteful number, since it uses less digits than its factorization.

55231839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472086 (or 472083 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 55231839 is about 7431.8126321914. The cubic root of 55231839 is about 380.8288441147.

The spelling of 55231839 in words is "fifty-five million, two hundred thirty-one thousand, eight hundred thirty-nine".