51810200 has 48 divisors (see below), whose sum is σ = 129731280. Its totient is φ = 19128960.

The previous prime is 51810173. The next prime is 51810233. The reversal of 51810200 is 201815.

51810200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7364 + ... + 12563.

It is an arithmetic number, because the mean of its divisors is an integer number (2702735).

Almost surely, 2^51810200 is an apocalyptic number.

51810200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51810200 is an abundant number, since it is smaller than the sum of its proper divisors (77921080).

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

51810200 is a wasteful number, since it uses less digits than its factorization.

51810200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19956 (or 19947 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 51810200 is about 7197.9302580672. The cubic root of 51810200 is about 372.7964398525.

The spelling of 51810200 in words is "fifty-one million, eight hundred ten thousand, two hundred".