55707239 has 8 divisors (see below), whose sum is σ = 64562688. Its totient is φ = 47076120.

The previous prime is 55707209. The next prime is 55707263. The reversal of 55707239 is 93270755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55707239 - 2⁸ = 55706983 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 (55707209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55547 + ... + 56540.

It is an arithmetic number, because the mean of its divisors is an integer number (8070336).

Almost surely, 2^55707239 is an apocalyptic number.

55707239 is a deficient number, since it is larger than the sum of its proper divisors (8855449).

55707239 is a wasteful number, since it uses less digits than its factorization.

55707239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112165.

The product of its (nonzero) digits is 66150, while the sum is 38.

The square root of 55707239 is about 7463.7282238838. The cubic root of 55707239 is about 381.9183670122.

The spelling of 55707239 in words is "fifty-five million, seven hundred seven thousand, two hundred thirty-nine".