47521173 has 32 divisors (see below), whose sum is σ = 75075840. Its totient is φ = 26173440.

The previous prime is 47521139. The next prime is 47521211. The reversal of 47521173 is 37112574.

It is not a de Polignac number, because 47521173 - 2¹⁸ = 47259029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47521173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47521073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83233 + ... + 83801.

It is an arithmetic number, because the mean of its divisors is an integer number (2346120).

Almost surely, 2^47521173 is an apocalyptic number.

It is an amenable number.

47521173 is a deficient number, since it is larger than the sum of its proper divisors (27554667).

47521173 is a wasteful number, since it uses less digits than its factorization.

47521173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717.

The product of its digits is 5880, while the sum is 30.

The square root of 47521173 is about 6893.5602557750. The cubic root of 47521173 is about 362.2116244775.

The spelling of 47521173 in words is "forty-seven million, five hundred twenty-one thousand, one hundred seventy-three".