47521172 has 24 divisors (see below), whose sum is σ = 85711584. Its totient is φ = 23036832.

The previous prime is 47521139. The next prime is 47521211. The reversal of 47521172 is 27112574.

47521172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80663 + ... + 81249.

It is an arithmetic number, because the mean of its divisors is an integer number (3571316).

Almost surely, 2^47521172 is an apocalyptic number.

It is an amenable number.

47521172 is a deficient number, since it is larger than the sum of its proper divisors (38190412).

47521172 is a wasteful number, since it uses less digits than its factorization.

47521172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 1173 counting only the distinct ones).

The product of its digits is 3920, while the sum is 29.

The square root of 47521172 is about 6893.5601832435. The cubic root of 47521172 is about 362.2116219368.

The spelling of 47521172 in words is "forty-seven million, five hundred twenty-one thousand, one hundred seventy-two".