50121413531 has 16 divisors (see below), whose sum is σ = 60754530816. Its totient is φ = 40365142656.

The previous prime is 50121413513. The next prime is 50121413557. The reversal of 50121413531 is 13531412105.

It is a cyclic number.

It is not a de Polignac number, because 50121413531 - 2²² = 50117219227 is a prime.

It is a super-2 number, since 2×50121413531² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50121413531.

It is not an unprimeable number, because it can be changed into a prime (50121413501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288911 + ... + 428616.

It is an arithmetic number, because the mean of its divisors is an integer number (3797158176).

Almost surely, 2^50121413531 is an apocalyptic number.

50121413531 is a deficient number, since it is larger than the sum of its proper divisors (10633117285).

50121413531 is a wasteful number, since it uses less digits than its factorization.

50121413531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718138.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 50121413531 its reverse (13531412105), we get a palindrome (63652825636).

The spelling of 50121413531 in words is "fifty billion, one hundred twenty-one million, four hundred thirteen thousand, five hundred thirty-one".