45085509 has 12 divisors (see below), whose sum is σ = 74426976. Its totient is φ = 25763112.

The previous prime is 45085483. The next prime is 45085511. The reversal of 45085509 is 90558054.

It is a happy number.

It is not a de Polignac number, because 45085509 - 2¹⁶ = 45019973 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45085529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 357759 + ... + 357884.

It is an arithmetic number, because the mean of its divisors is an integer number (6202248).

Almost surely, 2^45085509 is an apocalyptic number.

It is an amenable number.

45085509 is a deficient number, since it is larger than the sum of its proper divisors (29341467).

45085509 is a wasteful number, since it uses less digits than its factorization.

45085509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715656 (or 715653 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 45085509 is about 6714.5743722145. The cubic root of 45085509 is about 355.9144815204.

The spelling of 45085509 in words is "forty-five million, eighty-five thousand, five hundred nine".