253394172 has 36 divisors (see below), whose sum is σ = 649552176. Its totient is φ = 83274240.

The previous prime is 253394147. The next prime is 253394177. The reversal of 253394172 is 271493352.

253394172 is a `hidden beast` number, since 253 + 394 + 17 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253394177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47013 + ... + 52124.

It is an arithmetic number, because the mean of its divisors is an integer number (18043116).

Almost surely, 2^253394172 is an apocalyptic number.

It is an amenable number.

253394172 is an abundant number, since it is smaller than the sum of its proper divisors (396158004).

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

253394172 is a wasteful number, since it uses less digits than its factorization.

253394172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99218 (or 99213 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 253394172 is about 15918.3595888521. The cubic root of 253394172 is about 632.7986451800.

The spelling of 253394172 in words is "two hundred fifty-three million, three hundred ninety-four thousand, one hundred seventy-two".