51512355550 has 12 divisors (see below), whose sum is σ = 95812981416. Its totient is φ = 20604942200.

The previous prime is 51512355529. The next prime is 51512355577. The reversal of 51512355550 is 5555321515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 515123506 + ... + 515123605.

It is an arithmetic number, because the mean of its divisors is an integer number (7984415118).

Almost surely, 2^51512355550 is an apocalyptic number.

51512355550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51512355550 is a deficient number, since it is larger than the sum of its proper divisors (44300625866).

51512355550 is a wasteful number, since it uses less digits than its factorization.

51512355550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030247123 (or 1030247118 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 51512355550 in words is "fifty-one billion, five hundred twelve million, three hundred fifty-five thousand, five hundred fifty".