45131584 has 14 divisors (see below), whose sum is σ = 89558114. Its totient is φ = 22565760.

The previous prime is 45131579. The next prime is 45131587. The reversal of 45131584 is 48513154.

It can be written as a sum of positive squares in only one way, i.e., 32171584 + 12960000 = 5672^2 + 3600^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45131587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352527 + ... + 352654.

Almost surely, 2^45131584 is an apocalyptic number.

It is an amenable number.

45131584 is a deficient number, since it is larger than the sum of its proper divisors (44426530).

45131584 is an equidigital number, since it uses as much as digits as its factorization.

45131584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705193 (or 705183 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 45131584 is about 6718.0044656133. The cubic root of 45131584 is about 356.0356821533.

The spelling of 45131584 in words is "forty-five million, one hundred thirty-one thousand, five hundred eighty-four".