51730556 has 6 divisors (see below), whose sum is σ = 90528480. Its totient is φ = 25865276.

The previous prime is 51730517. The next prime is 51730571. The reversal of 51730556 is 65503715.

51730556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 6466316 + ... + 6466323.

It is an arithmetic number, because the mean of its divisors is an integer number (15088080).

Almost surely, 2^51730556 is an apocalyptic number.

It is an amenable number.

51730556 is a deficient number, since it is larger than the sum of its proper divisors (38797924).

51730556 is a wasteful number, since it uses less digits than its factorization.

51730556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12932643 (or 12932641 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 51730556 is about 7192.3957065779. The cubic root of 51730556 is about 372.6053177274.

The spelling of 51730556 in words is "fifty-one million, seven hundred thirty thousand, five hundred fifty-six".