55772235 has 24 divisors (see below), whose sum is σ = 96973344. Its totient is φ = 29652480.

The previous prime is 55772203. The next prime is 55772237. The reversal of 55772235 is 53227755.

It is a happy number.

55772235 is a `hidden beast` number, since 557 + 72 + 2 + 35 = 666.

It is not a de Polignac number, because 55772235 - 2⁵ = 55772203 is a prime.

It is a super-2 number, since 2×55772235² = 6221084393790450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55772235.

It is not an unprimeable number, because it can be changed into a prime (55772237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14130 + ... + 17640.

It is an arithmetic number, because the mean of its divisors is an integer number (4040556).

Almost surely, 2^55772235 is an apocalyptic number.

55772235 is a deficient number, since it is larger than the sum of its proper divisors (41201109).

55772235 is a wasteful number, since it uses less digits than its factorization.

55772235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875 (or 3872 counting only the distinct ones).

The product of its digits is 73500, while the sum is 36.

The square root of 55772235 is about 7468.0810788314. The cubic root of 55772235 is about 382.0668427388.

Subtracting from 55772235 its product of digits (73500), we obtain a triangular number (55698735 = T₁₀₅₅₄).

The spelling of 55772235 in words is "fifty-five million, seven hundred seventy-two thousand, two hundred thirty-five".