51968831 has 8 divisors (see below), whose sum is σ = 53466000. Its totient is φ = 50476608.

The previous prime is 51968827. The next prime is 51968863. The reversal of 51968831 is 13886915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51968831 - 2² = 51968827 is a prime.

It is a super-2 number, since 2×51968831² = 5401518791013122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51968131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33920 + ... + 35418.

It is an arithmetic number, because the mean of its divisors is an integer number (6683250).

Almost surely, 2^51968831 is an apocalyptic number.

51968831 is a deficient number, since it is larger than the sum of its proper divisors (1497169).

51968831 is a wasteful number, since it uses less digits than its factorization.

51968831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473.

The product of its digits is 51840, while the sum is 41.

The square root of 51968831 is about 7208.9410456738. The cubic root of 51968831 is about 373.1765247249.

The spelling of 51968831 in words is "fifty-one million, nine hundred sixty-eight thousand, eight hundred thirty-one".