51256916 has 12 divisors (see below), whose sum is σ = 89765088. Its totient is φ = 25609752.

The previous prime is 51256879. The next prime is 51256967. The reversal of 51256916 is 61965215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2825 + ... + 10511.

It is an arithmetic number, because the mean of its divisors is an integer number (7480424).

Almost surely, 2^51256916 is an apocalyptic number.

It is an amenable number.

51256916 is a deficient number, since it is larger than the sum of its proper divisors (38508172).

51256916 is a wasteful number, since it uses less digits than its factorization.

51256916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9358 (or 9356 counting only the distinct ones).

The product of its digits is 16200, while the sum is 35.

The square root of 51256916 is about 7159.3935497359. The cubic root of 51256916 is about 371.4646498344.

The spelling of 51256916 in words is "fifty-one million, two hundred fifty-six thousand, nine hundred sixteen".