51983208 has 40 divisors (see below), whose sum is σ = 145602930. Its totient is φ = 17327520.

The previous prime is 51983179. The next prime is 51983231. The reversal of 51983208 is 80238915.

It can be written as a sum of positive squares in only one way, i.e., 44595684 + 7387524 = 6678^2 + 2718^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39463 + ... + 40758.

Almost surely, 2^51983208 is an apocalyptic number.

It is an amenable number.

51983208 is an abundant number, since it is smaller than the sum of its proper divisors (93619722).

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

51983208 is a wasteful number, since it uses less digits than its factorization.

51983208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80239 (or 80226 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 51983208 is about 7209.9381412048. The cubic root of 51983208 is about 373.2109342233.

The spelling of 51983208 in words is "fifty-one million, nine hundred eighty-three thousand, two hundred eight".