51772473 has 32 divisors (see below), whose sum is σ = 82649600. Its totient is φ = 31924368.

The previous prime is 51772459. The next prime is 51772507. The reversal of 51772473 is 37427715.

51772473 is a `hidden beast` number, since 517 + 72 + 4 + 73 = 666.

It is not a de Polignac number, because 51772473 - 2⁹ = 51771961 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51772423) 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, 20886 + ... + 23232.

It is an arithmetic number, because the mean of its divisors is an integer number (2582800).

Almost surely, 2^51772473 is an apocalyptic number.

It is an amenable number.

51772473 is a deficient number, since it is larger than the sum of its proper divisors (30877127).

51772473 is a wasteful number, since it uses less digits than its factorization.

51772473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418 (or 2412 counting only the distinct ones).

The product of its digits is 41160, while the sum is 36.

The square root of 51772473 is about 7195.3090969047. The cubic root of 51772473 is about 372.7059306061.

The spelling of 51772473 in words is "fifty-one million, seven hundred seventy-two thousand, four hundred seventy-three".