45531645 has 16 divisors (see below), whose sum is σ = 74820480. Its totient is φ = 23626944.

The previous prime is 45531637. The next prime is 45531649. The reversal of 45531645 is 54613554.

It is not a de Polignac number, because 45531645 - 2³ = 45531637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45531649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40465 + ... + 41574.

It is an arithmetic number, because the mean of its divisors is an integer number (4676280).

Almost surely, 2^45531645 is an apocalyptic number.

It is an amenable number.

45531645 is a deficient number, since it is larger than the sum of its proper divisors (29288835).

45531645 is a wasteful number, since it uses less digits than its factorization.

45531645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82084.

The product of its digits is 36000, while the sum is 33.

The square root of 45531645 is about 6747.7140573679. The cubic root of 45531645 is about 357.0845941910.

The spelling of 45531645 in words is "forty-five million, five hundred thirty-one thousand, six hundred forty-five".