99755172 has 48 divisors (see below), whose sum is σ = 282139200. Its totient is φ = 30228480.

The previous prime is 99755171. The next prime is 99755177. The reversal of 99755172 is 27155799.

99755172 is a `hidden beast` number, since 9 + 97 + 551 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (99755171) 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, 40797 + ... + 43172.

It is an arithmetic number, because the mean of its divisors is an integer number (5877900).

Almost surely, 2^99755172 is an apocalyptic number.

It is an amenable number.

99755172 is an abundant number, since it is smaller than the sum of its proper divisors (182384028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99755172 is a wasteful number, since it uses less digits than its factorization.

99755172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83993 (or 83985 counting only the distinct ones).

The product of its digits is 198450, while the sum is 45.

The square root of 99755172 is about 9987.7510982203. The cubic root of 99755172 is about 463.7797768361.

It can be divided in two parts, 997 and 55172, that added together give a square (56169 = 237²).

The spelling of 99755172 in words is "ninety-nine million, seven hundred fifty-five thousand, one hundred seventy-two".