51665192 has 16 divisors (see below), whose sum is σ = 97089300. Its totient is φ = 25774720.

The previous prime is 51665191. The next prime is 51665197. The reversal of 51665192 is 29156615.

It can be written as a sum of positive squares in 2 ways, for example, as 51466276 + 198916 = 7174^2 + 446^2 .

It is not an unprimeable number, because it can be changed into a prime (51665191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3317 + ... + 10692.

Almost surely, 2^51665192 is an apocalyptic number.

It is an amenable number.

51665192 is a deficient number, since it is larger than the sum of its proper divisors (45424108).

51665192 is a wasteful number, since it uses less digits than its factorization.

51665192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14476 (or 14472 counting only the distinct ones).

The product of its digits is 16200, while the sum is 35.

The square root of 51665192 is about 7187.8503045069. The cubic root of 51665192 is about 372.4483167788.

The spelling of 51665192 in words is "fifty-one million, six hundred sixty-five thousand, one hundred ninety-two".