51052005250 has 32 divisors (see below), whose sum is σ = 96202334592. Its totient is φ = 20285550000.

The previous prime is 51052005247. The next prime is 51052005271. The reversal of 51052005250 is 5250025015.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 638436 + ... + 713935.

It is an arithmetic number, because the mean of its divisors is an integer number (3006322956).

Almost surely, 2^51052005250 is an apocalyptic number.

51052005250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51052005250 is a deficient number, since it is larger than the sum of its proper divisors (45150329342).

51052005250 is a wasteful number, since it uses less digits than its factorization.

51052005250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352539 (or 1352529 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The spelling of 51052005250 in words is "fifty-one billion, fifty-two million, five thousand, two hundred fifty".