63512172 has 18 divisors (see below), whose sum is σ = 160544748. Its totient is φ = 21170712.

The previous prime is 63512159. The next prime is 63512173. The reversal of 63512172 is 27121536.

It is a happy number.

63512172 is a `hidden beast` number, since 635 + 1 + 21 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (63512173) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 882078 + ... + 882149.

Almost surely, 2^63512172 is an apocalyptic number.

It is an amenable number.

63512172 is an abundant number, since it is smaller than the sum of its proper divisors (97032576).

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

63512172 is a wasteful number, since it uses less digits than its factorization.

63512172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764237 (or 1764232 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 63512172 is about 7969.4524278648. The cubic root of 63512172 is about 398.9810984696.

The spelling of 63512172 in words is "sixty-three million, five hundred twelve thousand, one hundred seventy-two".