51983700 has 72 divisors (see below), whose sum is σ = 151240320. Its totient is φ = 13785600.

The previous prime is 51983693. The next prime is 51983731. The reversal of 51983700 is 738915.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71941 + ... + 72659.

It is an arithmetic number, because the mean of its divisors is an integer number (2100560).

Almost surely, 2^51983700 is an apocalyptic number.

51983700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51983700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75620160).

51983700 is an abundant number, since it is smaller than the sum of its proper divisors (99256620).

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

51983700 is a wasteful number, since it uses less digits than its factorization.

51983700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977 (or 970 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 51983700 is about 7209.9722606956. The cubic root of 51983700 is about 373.2121116497.

The spelling of 51983700 in words is "fifty-one million, nine hundred eighty-three thousand, seven hundred".