45165709 has 4 divisors (see below), whose sum is σ = 45209340. Its totient is φ = 45122080.

The previous prime is 45165707. The next prime is 45165713. The reversal of 45165709 is 90756154.

45165709 is nontrivially palindromic in base 3.

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 24780484 + 20385225 = 4978^2 + 4515^2 .

It is a cyclic number.

It is not a de Polignac number, because 45165709 - 2¹ = 45165707 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 (45165707) 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, 20224 + ... + 22345.

It is an arithmetic number, because the mean of its divisors is an integer number (11302335).

Almost surely, 2^45165709 is an apocalyptic number.

It is an amenable number.

45165709 is a deficient number, since it is larger than the sum of its proper divisors (43631).

45165709 is a wasteful number, since it uses less digits than its factorization.

45165709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43630.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 45165709 is about 6720.5438024017. The cubic root of 45165709 is about 356.1253950598.

The spelling of 45165709 in words is "forty-five million, one hundred sixty-five thousand, seven hundred nine".