50440521531 has 4 divisors (see below), whose sum is σ = 67254028712. Its totient is φ = 33627014352.

The previous prime is 50440521497. The next prime is 50440521553. The reversal of 50440521531 is 13512504405.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 50440521531 - 2²⁵ = 50406967099 is a prime.

It is a super-2 number, since 2×50440521531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50440521581) 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, 8406753586 + ... + 8406753591.

It is an arithmetic number, because the mean of its divisors is an integer number (16813507178).

Almost surely, 2^50440521531 is an apocalyptic number.

50440521531 is a deficient number, since it is larger than the sum of its proper divisors (16813507181).

50440521531 is a wasteful number, since it uses less digits than its factorization.

50440521531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16813507180.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 50440521531 in words is "fifty billion, four hundred forty million, five hundred twenty-one thousand, five hundred thirty-one".