45039565 has 4 divisors (see below), whose sum is σ = 54047484. Its totient is φ = 36031648.

The previous prime is 45039551. The next prime is 45039569. The reversal of 45039565 is 56593054.

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 22553001 + 22486564 = 4749^2 + 4742^2 .

It is a cyclic number.

It is not a de Polignac number, because 45039565 - 2⁹ = 45039053 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 (45039569) 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, 4503952 + ... + 4503961.

It is an arithmetic number, because the mean of its divisors is an integer number (13511871).

Almost surely, 2^45039565 is an apocalyptic number.

It is an amenable number.

45039565 is a deficient number, since it is larger than the sum of its proper divisors (9007919).

45039565 is an equidigital number, since it uses as much as digits as its factorization.

45039565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9007918.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 45039565 is about 6711.1522855617. The cubic root of 45039565 is about 355.7935432341.

The spelling of 45039565 in words is "forty-five million, thirty-nine thousand, five hundred sixty-five".