55972275 has 24 divisors (see below), whose sum is σ = 92773824. Its totient is φ = 29776800.

The previous prime is 55972243. The next prime is 55972277. The reversal of 55972275 is 57227955.

It is a happy number.

55972275 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 55972275 - 2⁵ = 55972243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55972277) 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, 42172 + ... + 43478.

It is an arithmetic number, because the mean of its divisors is an integer number (3865576).

Almost surely, 2^55972275 is an apocalyptic number.

55972275 is a deficient number, since it is larger than the sum of its proper divisors (36801549).

55972275 is a wasteful number, since it uses less digits than its factorization.

55972275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891 (or 1886 counting only the distinct ones).

The product of its digits is 220500, while the sum is 42.

The square root of 55972275 is about 7481.4620897255. The cubic root of 55972275 is about 382.5230880164.

The spelling of 55972275 in words is "fifty-five million, nine hundred seventy-two thousand, two hundred seventy-five".