55549975 has 24 divisors (see below), whose sum is σ = 75463920. Its totient is φ = 40312320.

The previous prime is 55549961. The next prime is 55549979. The reversal of 55549975 is 57994555.

55549975 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55549975 - 2⁵ = 55549943 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55549979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17727 + ... + 20623.

It is an arithmetic number, because the mean of its divisors is an integer number (3144330).

Almost surely, 2^55549975 is an apocalyptic number.

55549975 is a deficient number, since it is larger than the sum of its proper divisors (19913945).

55549975 is a wasteful number, since it uses less digits than its factorization.

55549975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979 (or 2974 counting only the distinct ones).

The product of its digits is 1417500, while the sum is 49.

The square root of 55549975 is about 7453.1855605506. The cubic root of 55549975 is about 381.5586374738.

The spelling of 55549975 in words is "fifty-five million, five hundred forty-nine thousand, nine hundred seventy-five".