51213716 has 12 divisors (see below), whose sum is σ = 90269760. Its totient is φ = 25422360.

The previous prime is 51213689. The next prime is 51213737. The reversal of 51213716 is 61731215.

51213716 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 in 3 ways as a sum of consecutive naturals, for example, 45500 + ... + 46611.

It is an arithmetic number, because the mean of its divisors is an integer number (7522480).

Almost surely, 2^51213716 is an apocalyptic number.

It is an amenable number.

51213716 is a deficient number, since it is larger than the sum of its proper divisors (39056044).

51213716 is a wasteful number, since it uses less digits than its factorization.

51213716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92254 (or 92252 counting only the distinct ones).

The product of its digits is 1260, while the sum is 26.

The square root of 51213716 is about 7156.3758984559. The cubic root of 51213716 is about 371.3602620788.

The spelling of 51213716 in words is "fifty-one million, two hundred thirteen thousand, seven hundred sixteen".