51057800 has 48 divisors (see below), whose sum is σ = 125700660. Its totient is φ = 19220480.

The previous prime is 51057767. The next prime is 51057827. The reversal of 51057800 is 875015.

It can be written as a sum of positive squares in 6 ways, for example, as 21659716 + 29398084 = 4654^2 + 5422^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51057800.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4109 + ... + 10908.

Almost surely, 2^51057800 is an apocalyptic number.

51057800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51057800 is an abundant number, since it is smaller than the sum of its proper divisors (74642860).

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

51057800 is a wasteful number, since it uses less digits than its factorization.

51057800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15050 (or 15041 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 51057800 is about 7145.4740920390. The cubic root of 51057800 is about 370.9830202704.

The spelling of 51057800 in words is "fifty-one million, fifty-seven thousand, eight hundred".