45185885 has 8 divisors (see below), whose sum is σ = 54760536. Its totient is φ = 35790400.

The previous prime is 45185873. The next prime is 45185909. The reversal of 45185885 is 58858154.

It can be written as a sum of positive squares in 4 ways, for example, as 2427364 + 42758521 = 1558^2 + 6539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45185885 - 2²⁰ = 44137309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44234 + ... + 45243.

It is an arithmetic number, because the mean of its divisors is an integer number (6845067).

Almost surely, 2^45185885 is an apocalyptic number.

It is an amenable number.

45185885 is a deficient number, since it is larger than the sum of its proper divisors (9574651).

45185885 is a wasteful number, since it uses less digits than its factorization.

45185885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89583.

The product of its digits is 256000, while the sum is 44.

The square root of 45185885 is about 6722.0447038085. The cubic root of 45185885 is about 356.1784154927.

The spelling of 45185885 in words is "forty-five million, one hundred eighty-five thousand, eight hundred eighty-five".