45512187 has 32 divisors (see below), whose sum is σ = 71385600. Its totient is φ = 25256448.

The previous prime is 45512177. The next prime is 45512191. The reversal of 45512187 is 78121554.

It is not a de Polignac number, because 45512187 - 2⁴ = 45512171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45512177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134883 + ... + 135219.

It is an arithmetic number, because the mean of its divisors is an integer number (2230800).

Almost surely, 2^45512187 is an apocalyptic number.

45512187 is a deficient number, since it is larger than the sum of its proper divisors (25873413).

45512187 is a wasteful number, since it uses less digits than its factorization.

45512187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515.

The product of its digits is 11200, while the sum is 33.

The square root of 45512187 is about 6746.2720816759. The cubic root of 45512187 is about 357.0337201081.

The spelling of 45512187 in words is "forty-five million, five hundred twelve thousand, one hundred eighty-seven".