51020542200 has 48 divisors (see below), whose sum is σ = 158163682680. Its totient is φ = 13605477760.

The previous prime is 51020542159. The next prime is 51020542211. The reversal of 51020542200 is 224502015.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42516519 + ... + 42517718.

Almost surely, 2^51020542200 is an apocalyptic number.

51020542200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51020542200 is an abundant number, since it is smaller than the sum of its proper divisors (107143140480).

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

51020542200 is a wasteful number, since it uses less digits than its factorization.

51020542200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85034256 (or 85034247 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The spelling of 51020542200 in words is "fifty-one billion, twenty million, five hundred forty-two thousand, two hundred".