249995172 has 24 divisors (see below), whose sum is σ = 666654016. Its totient is φ = 71427168.

The previous prime is 249995171. The next prime is 249995177. The reversal of 249995172 is 271599942.

249995172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (249995171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1487983 + ... + 1488150.

Almost surely, 2^249995172 is an apocalyptic number.

It is an amenable number.

249995172 is an abundant number, since it is smaller than the sum of its proper divisors (416658844).

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

249995172 is a wasteful number, since it uses less digits than its factorization.

249995172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976147 (or 2976145 counting only the distinct ones).

The product of its digits is 408240, while the sum is 48.

The square root of 249995172 is about 15811.2356253393. The cubic root of 249995172 is about 629.9564696554.

The spelling of 249995172 in words is "two hundred forty-nine million, nine hundred ninety-five thousand, one hundred seventy-two".