172471563 has 24 divisors (see below), whose sum is σ = 272263680. Its totient is φ = 104339760.

The previous prime is 172471553. The next prime is 172471577. The reversal of 172471563 is 365174271.

It is a happy number.

172471563 is a `hidden beast` number, since 1 + 7 + 24 + 71 + 563 = 666.

172471563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172471563 - 2⁴ = 172471547 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (172471513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69970 + ... + 72392.

It is an arithmetic number, because the mean of its divisors is an integer number (11344320).

Almost surely, 2^172471563 is an apocalyptic number.

172471563 is a deficient number, since it is larger than the sum of its proper divisors (99792117).

172471563 is a wasteful number, since it uses less digits than its factorization.

172471563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159 (or 3156 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 172471563 is about 13132.8429138553. The cubic root of 172471563 is about 556.6375497617.

The spelling of 172471563 in words is "one hundred seventy-two million, four hundred seventy-one thousand, five hundred sixty-three".