51047724 has 48 divisors (see below), whose sum is σ = 146601728. Its totient is φ = 13462848.

The previous prime is 51047671. The next prime is 51047779. The reversal of 51047724 is 42774015.

51047724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51047691 and 51047700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22282 + ... + 24465.

Almost surely, 2^51047724 is an apocalyptic number.

It is an amenable number.

51047724 is an abundant number, since it is smaller than the sum of its proper divisors (95554004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51047724 is a wasteful number, since it uses less digits than its factorization.

51047724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46774 (or 46772 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 51047724 is about 7144.7689955659. The cubic root of 51047724 is about 370.9586147873.

The spelling of 51047724 in words is "fifty-one million, forty-seven thousand, seven hundred twenty-four".