51968769 has 8 divisors (see below), whose sum is σ = 69344352. Its totient is φ = 34619520.

The previous prime is 51968759. The next prime is 51968789. The reversal of 51968769 is 96786915.

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

It is not a de Polignac number, because 51968769 - 2⁸ = 51968513 is a prime.

It is a super-2 number, since 2×51968769² = 5401505902750722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51968759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1392 + ... + 10289.

It is an arithmetic number, because the mean of its divisors is an integer number (8668044).

Almost surely, 2^51968769 is an apocalyptic number.

It is an amenable number.

51968769 is a deficient number, since it is larger than the sum of its proper divisors (17375583).

51968769 is a wasteful number, since it uses less digits than its factorization.

51968769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13167.

The product of its digits is 816480, while the sum is 51.

The square root of 51968769 is about 7208.9367454570. The cubic root of 51968769 is about 373.1763763222.

The spelling of 51968769 in words is "fifty-one million, nine hundred sixty-eight thousand, seven hundred sixty-nine".