51868396 has 6 divisors (see below), whose sum is σ = 90769700. Its totient is φ = 25934196.

The previous prime is 51868391. The next prime is 51868409. The reversal of 51868396 is 69386815.

It is a super-2 number, since 2×51868396² = 5380661007225632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51868391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6483546 + ... + 6483553.

Almost surely, 2^51868396 is an apocalyptic number.

It is an amenable number.

51868396 is a deficient number, since it is larger than the sum of its proper divisors (38901304).

51868396 is a wasteful number, since it uses less digits than its factorization.

51868396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12967103 (or 12967101 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 51868396 is about 7201.9716744791. The cubic root of 51868396 is about 372.9359692861.

The spelling of 51868396 in words is "fifty-one million, eight hundred sixty-eight thousand, three hundred ninety-six".