51718412 has 6 divisors (see below), whose sum is σ = 90507228. Its totient is φ = 25859204.

The previous prime is 51718411. The next prime is 51718417. The reversal of 51718412 is 21481715.

It is not an unprimeable number, because it can be changed into a prime (51718411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6464798 + ... + 6464805.

It is an arithmetic number, because the mean of its divisors is an integer number (15084538).

Almost surely, 2^51718412 is an apocalyptic number.

It is an amenable number.

51718412 is a deficient number, since it is larger than the sum of its proper divisors (38788816).

51718412 is a wasteful number, since it uses less digits than its factorization.

51718412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12929607 (or 12929605 counting only the distinct ones).

The product of its digits is 2240, while the sum is 29.

The square root of 51718412 is about 7191.5514320625. The cubic root of 51718412 is about 372.5761584744.

The spelling of 51718412 in words is "fifty-one million, seven hundred eighteen thousand, four hundred twelve".