51516316 has 6 divisors (see below), whose sum is σ = 90153560. Its totient is φ = 25758156.

The previous prime is 51516301. The next prime is 51516317. The reversal of 51516316 is 61361515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51516317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6439536 + ... + 6439543.

Almost surely, 2^51516316 is an apocalyptic number.

It is an amenable number.

51516316 is a deficient number, since it is larger than the sum of its proper divisors (38637244).

51516316 is a wasteful number, since it uses less digits than its factorization.

51516316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12879083 (or 12879081 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 51516316 is about 7177.4867467659. The cubic root of 51516316 is about 372.0902293944.

The spelling of 51516316 in words is "fifty-one million, five hundred sixteen thousand, three hundred sixteen".