55357939 has 16 divisors (see below), whose sum is σ = 68770240. Its totient is φ = 43390080.

The previous prime is 55357931. The next prime is 55357943. The reversal of 55357939 is 93975355.

It is a cyclic number.

It is not a de Polignac number, because 55357939 - 2³ = 55357931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55357931) 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, 7129 + ... + 12709.

It is an arithmetic number, because the mean of its divisors is an integer number (4298140).

Almost surely, 2^55357939 is an apocalyptic number.

55357939 is a deficient number, since it is larger than the sum of its proper divisors (13412301).

55357939 is a wasteful number, since it uses less digits than its factorization.

55357939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5710.

The product of its digits is 637875, while the sum is 46.

The square root of 55357939 is about 7440.2915937482. The cubic root of 55357939 is about 381.1184477057.

The spelling of 55357939 in words is "fifty-five million, three hundred fifty-seven thousand, nine hundred thirty-nine".