51693676 has 12 divisors (see below), whose sum is σ = 91997640. Its totient is φ = 25408640.

The previous prime is 51693667. The next prime is 51693679. The reversal of 51693676 is 67639615.

51693676 = 450² + 451² + ... + 626².

It is a super-2 number, since 2×51693676² = 5344472276785952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51693679) 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 in 3 ways as a sum of consecutive naturals, for example, 109285 + ... + 109756.

It is an arithmetic number, because the mean of its divisors is an integer number (7666470).

Almost surely, 2^51693676 is an apocalyptic number.

It is an amenable number.

51693676 is a deficient number, since it is larger than the sum of its proper divisors (40303964).

51693676 is a wasteful number, since it uses less digits than its factorization.

51693676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219104 (or 219102 counting only the distinct ones).

The product of its digits is 204120, while the sum is 43.

The square root of 51693676 is about 7189.8314305691. The cubic root of 51693676 is about 372.5167501439.

The spelling of 51693676 in words is "fifty-one million, six hundred ninety-three thousand, six hundred seventy-six".