51983698 has 16 divisors (see below), whose sum is σ = 84343896. Its totient is φ = 23886720.

The previous prime is 51983693. The next prime is 51983731. The reversal of 51983698 is 89638915.

It can be written as a sum of positive squares in 4 ways, for example, as 9381969 + 42601729 = 3063^2 + 6527^2 .

It is not an unprimeable number, because it can be changed into a prime (51983693) 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, 1768 + ... + 10348.

Almost surely, 2^51983698 is an apocalyptic number.

51983698 is a deficient number, since it is larger than the sum of its proper divisors (32360198).

51983698 is a wasteful number, since it uses less digits than its factorization.

51983698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8829.

The product of its digits is 466560, while the sum is 49.

The square root of 51983698 is about 7209.9721219988. The cubic root of 51983698 is about 373.2121068634.

The spelling of 51983698 in words is "fifty-one million, nine hundred eighty-three thousand, six hundred ninety-eight".