45131562121 has 6 divisors (see below), whose sum is σ = 45758277150. Its totient is φ = 44513316288.

The previous prime is 45131562109. The next prime is 45131562139. The reversal of 45131562121 is 12126513154.

It can be written as a sum of positive squares in 3 ways, for example, as 21855482896 + 23276079225 = 147836^2 + 152565^2 .

It is not a de Polignac number, because 45131562121 - 2⁵ = 45131562089 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45131562521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4229196 + ... + 4239853.

It is an arithmetic number, because the mean of its divisors is an integer number (7626379525).

Almost surely, 2^45131562121 is an apocalyptic number.

It is an amenable number.

45131562121 is a deficient number, since it is larger than the sum of its proper divisors (626715029).

45131562121 is an frugal number, since it uses more digits than its factorization.

45131562121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8469195 (or 8469122 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The spelling of 45131562121 in words is "forty-five billion, one hundred thirty-one million, five hundred sixty-two thousand, one hundred twenty-one".