45131523253 has 4 divisors (see below), whose sum is σ = 45180104940. Its totient is φ = 45082941568.

The previous prime is 45131523181. The next prime is 45131523277. The reversal of 45131523253 is 35232513154.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14792154129 + 30339369124 = 121623^2 + 174182^2 .

It is a cyclic number.

It is not a de Polignac number, because 45131523253 - 2⁹ = 45131522741 is a prime.

It is a super-2 number, since 2×45131523253² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45135523253) 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, 24289450 + ... + 24291307.

It is an arithmetic number, because the mean of its divisors is an integer number (11295026235).

Almost surely, 2^45131523253 is an apocalyptic number.

It is an amenable number.

45131523253 is a deficient number, since it is larger than the sum of its proper divisors (48581687).

45131523253 is an equidigital number, since it uses as much as digits as its factorization.

45131523253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48581686.

The product of its digits is 54000, while the sum is 34.

The spelling of 45131523253 in words is "forty-five billion, one hundred thirty-one million, five hundred twenty-three thousand, two hundred fifty-three".