51207872 has 14 divisors (see below), whose sum is σ = 101615748. Its totient is φ = 25603904.

The previous prime is 51207857. The next prime is 51207887. The reversal of 51207872 is 27870215.

It is an interprime number because it is at equal distance from previous prime (51207857) and next prime (51207887).

It is a Harshad number since it is a multiple of its sum of digits (32).

51207872 is a modest number, since divided by 7872 gives 512 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399998 + ... + 400125.

Almost surely, 2^51207872 is an apocalyptic number.

It is an amenable number.

51207872 is a deficient number, since it is larger than the sum of its proper divisors (50407876).

51207872 is an equidigital number, since it uses as much as digits as its factorization.

51207872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800135 (or 800125 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 51207872 is about 7155.9675795800. The cubic root of 51207872 is about 371.3461362280.

The spelling of 51207872 in words is "fifty-one million, two hundred seven thousand, eight hundred seventy-two".