51504340550 has 48 divisors (see below), whose sum is σ = 103551028560. Its totient is φ = 18946227840.

The previous prime is 51504340529. The next prime is 51504340561. The reversal of 51504340550 is 5504340515.

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, 27569 + ... + 322131.

It is an arithmetic number, because the mean of its divisors is an integer number (2157313095).

Almost surely, 2^51504340550 is an apocalyptic number.

51504340550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51504340550 is an abundant number, since it is smaller than the sum of its proper divisors (52046688010).

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

51504340550 is a wasteful number, since it uses less digits than its factorization.

51504340550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294857 (or 294852 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The spelling of 51504340550 in words is "fifty-one billion, five hundred four million, three hundred forty thousand, five hundred fifty".