50215055131 has 4 divisors (see below), whose sum is σ = 50234304600. Its totient is φ = 50195805664.

The previous prime is 50215055123. The next prime is 50215055153. The reversal of 50215055131 is 13155051205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13155051205 = 5 ⋅2631010241.

It is a cyclic number.

It is not a de Polignac number, because 50215055131 - 2³ = 50215055123 is a prime.

It is a super-2 number, since 2×50215055131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50215055131.

It is not an unprimeable number, because it can be changed into a prime (50215055101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9620821 + ... + 9626038.

It is an arithmetic number, because the mean of its divisors is an integer number (12558576150).

Almost surely, 2^50215055131 is an apocalyptic number.

50215055131 is a deficient number, since it is larger than the sum of its proper divisors (19249469).

50215055131 is a wasteful number, since it uses less digits than its factorization.

50215055131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19249468.

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 50215055131 in words is "fifty billion, two hundred fifteen million, fifty-five thousand, one hundred thirty-one".