45305521531 has 4 divisors (see below), whose sum is σ = 45851371272. Its totient is φ = 44759671792.

The previous prime is 45305521519. The next prime is 45305521537. The reversal of 45305521531 is 13512550354.

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

It is a cyclic number.

It is not a de Polignac number, because 45305521531 - 2¹⁵ = 45305488763 is a prime.

It is a super-2 number, since 2×45305521531² (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 (45305521537) 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, 272924746 + ... + 272924911.

It is an arithmetic number, because the mean of its divisors is an integer number (11462842818).

Almost surely, 2^45305521531 is an apocalyptic number.

45305521531 is a deficient number, since it is larger than the sum of its proper divisors (545849741).

45305521531 is an equidigital number, since it uses as much as digits as its factorization.

45305521531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545849740.

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 45305521531 in words is "forty-five billion, three hundred five million, five hundred twenty-one thousand, five hundred thirty-one".