45189885 has 32 divisors (see below), whose sum is σ = 81970560. Its totient is φ = 21074688.

The previous prime is 45189877. The next prime is 45189887. The reversal of 45189885 is 58898154.

It is not a de Polignac number, because 45189885 - 2³ = 45189877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45189887) 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, 2394 + ... + 9803.

It is an arithmetic number, because the mean of its divisors is an integer number (2561580).

Almost surely, 2^45189885 is an apocalyptic number.

It is an amenable number.

45189885 is a deficient number, since it is larger than the sum of its proper divisors (36780675).

45189885 is a wasteful number, since it uses less digits than its factorization.

45189885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12237.

The product of its digits is 460800, while the sum is 48.

The square root of 45189885 is about 6722.3422257425. The cubic root of 45189885 is about 356.1889252026.

The spelling of 45189885 in words is "forty-five million, one hundred eighty-nine thousand, eight hundred eighty-five".