51868692 has 36 divisors (see below), whose sum is σ = 132699840. Its totient is φ = 17080272.

The previous prime is 51868669. The next prime is 51868699. The reversal of 51868692 is 29686815.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×51868692² = 5380722419581728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51868699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5692 + ... + 11667.

Almost surely, 2^51868692 is an apocalyptic number.

It is an amenable number.

51868692 is an abundant number, since it is smaller than the sum of its proper divisors (80831148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51868692 is a wasteful number, since it uses less digits than its factorization.

51868692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17452 (or 17447 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 51868692 is about 7201.9922243779. The cubic root of 51868692 is about 372.9366787023.

The spelling of 51868692 in words is "fifty-one million, eight hundred sixty-eight thousand, six hundred ninety-two".