51873572 has 12 divisors (see below), whose sum is σ = 95556720. Its totient is φ = 24571656.

The previous prime is 51873559. The next prime is 51873583. The reversal of 51873572 is 27537815.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341198 + ... + 341349.

It is an arithmetic number, because the mean of its divisors is an integer number (7963060).

Almost surely, 2^51873572 is an apocalyptic number.

It is an amenable number.

51873572 is a deficient number, since it is larger than the sum of its proper divisors (43683148).

51873572 is a wasteful number, since it uses less digits than its factorization.

51873572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682570 (or 682568 counting only the distinct ones).

The product of its digits is 58800, while the sum is 38.

The square root of 51873572 is about 7202.3310115545. The cubic root of 51873572 is about 372.9483740934.

The spelling of 51873572 in words is "fifty-one million, eight hundred seventy-three thousand, five hundred seventy-two".