51798800 has 30 divisors (see below), whose sum is σ = 124447578. Its totient is φ = 20719360.

The previous prime is 51798763. The next prime is 51798809. The reversal of 51798800 is 889715.

It can be written as a sum of positive squares in 3 ways, for example, as 16384 + 51782416 = 128^2 + 7196^2 .

It is not an unprimeable number, because it can be changed into a prime (51798809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64349 + ... + 65148.

Almost surely, 2^51798800 is an apocalyptic number.

51798800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51798800 is an abundant number, since it is smaller than the sum of its proper divisors (72648778).

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

51798800 is a wasteful number, since it uses less digits than its factorization.

51798800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129515 (or 129504 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 51798800 is about 7197.1383201937. The cubic root of 51798800 is about 372.7690952295.

The spelling of 51798800 in words is "fifty-one million, seven hundred ninety-eight thousand, eight hundred".