45520531131 has 4 divisors (see below), whose sum is σ = 60694041512. Its totient is φ = 30347020752.

The previous prime is 45520531127. The next prime is 45520531157. The reversal of 45520531131 is 13113502554.

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

It is not a de Polignac number, because 45520531131 - 2² = 45520531127 is a prime.

It is a super-2 number, since 2×45520531131² (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 (45520531031) 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, 7586755186 + ... + 7586755191.

It is an arithmetic number, because the mean of its divisors is an integer number (15173510378).

Almost surely, 2^45520531131 is an apocalyptic number.

45520531131 is a deficient number, since it is larger than the sum of its proper divisors (15173510381).

45520531131 is a wasteful number, since it uses less digits than its factorization.

45520531131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15173510380.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 45520531131 in words is "forty-five billion, five hundred twenty million, five hundred thirty-one thousand, one hundred thirty-one".