55479975 has 24 divisors (see below), whose sum is σ = 93684480. Its totient is φ = 28957920.

The previous prime is 55479971. The next prime is 55479989. The reversal of 55479975 is 57997455.

It is not a de Polignac number, because 55479975 - 2² = 55479971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55479971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4345 + ... + 11394.

It is an arithmetic number, because the mean of its divisors is an integer number (3903520).

Almost surely, 2^55479975 is an apocalyptic number.

55479975 is a deficient number, since it is larger than the sum of its proper divisors (38204505).

55479975 is a wasteful number, since it uses less digits than its factorization.

55479975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15799 (or 15794 counting only the distinct ones).

The product of its digits is 1984500, while the sum is 51.

The square root of 55479975 is about 7448.4881016217. The cubic root of 55479975 is about 381.3982993792.

The spelling of 55479975 in words is "fifty-five million, four hundred seventy-nine thousand, nine hundred seventy-five".