45138365 has 4 divisors (see below), whose sum is σ = 54166044. Its totient is φ = 36110688.

The previous prime is 45138361. The next prime is 45138367. The reversal of 45138365 is 56383154.

45138365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 9114361 + 36024004 = 3019^2 + 6002^2 .

It is a cyclic number.

It is not a de Polignac number, because 45138365 - 2² = 45138361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45138361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4513832 + ... + 4513841.

It is an arithmetic number, because the mean of its divisors is an integer number (13541511).

Almost surely, 2^45138365 is an apocalyptic number.

It is an amenable number.

45138365 is a deficient number, since it is larger than the sum of its proper divisors (9027679).

45138365 is an equidigital number, since it uses as much as digits as its factorization.

45138365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9027678.

The product of its digits is 43200, while the sum is 35.

The square root of 45138365 is about 6718.5091352174. The cubic root of 45138365 is about 356.0535126602.

The spelling of 45138365 in words is "forty-five million, one hundred thirty-eight thousand, three hundred sixty-five".