55712239 has 16 divisors (see below), whose sum is σ = 63129600. Its totient is φ = 48708000.

The previous prime is 55712231. The next prime is 55712243. The reversal of 55712239 is 93221755.

It is not a de Polignac number, because 55712239 - 2³ = 55712231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55712231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67449 + ... + 68269.

It is an arithmetic number, because the mean of its divisors is an integer number (3945600).

Almost surely, 2^55712239 is an apocalyptic number.

55712239 is a deficient number, since it is larger than the sum of its proper divisors (7417361).

55712239 is a wasteful number, since it uses less digits than its factorization.

55712239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062.

The product of its digits is 18900, while the sum is 34.

The square root of 55712239 is about 7464.0631696148. The cubic root of 55712239 is about 381.9297930240.

The spelling of 55712239 in words is "fifty-five million, seven hundred twelve thousand, two hundred thirty-nine".