51121022050 has 24 divisors (see below), whose sum is σ = 108668687616. Its totient is φ = 17527207440.

The previous prime is 51121022041. The next prime is 51121022101. The reversal of 51121022050 is 5022012115.

51121022050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51121022050² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73029682 + ... + 73030381.

It is an arithmetic number, because the mean of its divisors is an integer number (4527861984).

Almost surely, 2^51121022050 is an apocalyptic number.

51121022050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51121022050 is an abundant number, since it is smaller than the sum of its proper divisors (57547665566).

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

51121022050 is a wasteful number, since it uses less digits than its factorization.

51121022050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146060082 (or 146060077 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 51121022050 its reverse (5022012115), we get a palindrome (56143034165).

The spelling of 51121022050 in words is "fifty-one billion, one hundred twenty-one million, twenty-two thousand, fifty".