51518696 has 8 divisors (see below), whose sum is σ = 96597570. Its totient is φ = 25759344.

The previous prime is 51518659. The next prime is 51518699. The reversal of 51518696 is 69681515.

It can be written as a sum of positive squares in only one way, i.e., 48580900 + 2937796 = 6970^2 + 1714^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (51518699) 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, 3219911 + ... + 3219926.

Almost surely, 2^51518696 is an apocalyptic number.

It is an amenable number.

51518696 is a deficient number, since it is larger than the sum of its proper divisors (45078874).

51518696 is a wasteful number, since it uses less digits than its factorization.

51518696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439843 (or 6439839 counting only the distinct ones).

The product of its digits is 64800, while the sum is 41.

The square root of 51518696 is about 7177.6525410471. The cubic root of 51518696 is about 372.0959593661.

The spelling of 51518696 in words is "fifty-one million, five hundred eighteen thousand, six hundred ninety-six".