51404772 has 24 divisors (see below), whose sum is σ = 120076096. Its totient is φ = 17116128.

The previous prime is 51404767. The next prime is 51404807. The reversal of 51404772 is 27740415.

51404772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 13113 + ... + 16575.

Almost surely, 2^51404772 is an apocalyptic number.

It is an amenable number.

51404772 is an abundant number, since it is smaller than the sum of its proper divisors (68671324).

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

51404772 is a wasteful number, since it uses less digits than its factorization.

51404772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4707 (or 4705 counting only the distinct ones).

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

The square root of 51404772 is about 7169.7121281123. The cubic root of 51404772 is about 371.8214833140.

The spelling of 51404772 in words is "fifty-one million, four hundred four thousand, seven hundred seventy-two".