45009185 has 16 divisors (see below), whose sum is σ = 59587920. Its totient is φ = 32424960.

The previous prime is 45009163. The next prime is 45009187. The reversal of 45009185 is 58190054.

It can be written as a sum of positive squares in 8 ways, for example, as 25331089 + 19678096 = 5033^2 + 4436^2 .

It is not a de Polignac number, because 45009185 - 2²² = 40814881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45009187) 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, 5780 + ... + 11109.

It is an arithmetic number, because the mean of its divisors is an integer number (3724245).

Almost surely, 2^45009185 is an apocalyptic number.

It is an amenable number.

45009185 is a deficient number, since it is larger than the sum of its proper divisors (14578735).

45009185 is a wasteful number, since it uses less digits than its factorization.

45009185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16948.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 45009185 is about 6708.8885070479. Note that the first 3 decimals coincide. The cubic root of 45009185 is about 355.7135288508.

The spelling of 45009185 in words is "forty-five million, nine thousand, one hundred eighty-five".