51055050550 has 48 divisors (see below), whose sum is σ = 109603065312. Its totient is φ = 17331264000.

The previous prime is 51055050523. The next prime is 51055050569. The reversal of 51055050550 is 5505055015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 686787 + ... + 757486.

It is an arithmetic number, because the mean of its divisors is an integer number (2283397194).

Almost surely, 2^51055050550 is an apocalyptic number.

51055050550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51055050550 is an abundant number, since it is smaller than the sum of its proper divisors (58548014762).

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

51055050550 is a wasteful number, since it uses less digits than its factorization.

51055050550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444393 (or 1444388 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 31.

The spelling of 51055050550 in words is "fifty-one billion, fifty-five million, fifty thousand, five hundred fifty".