45221090 has 16 divisors (see below), whose sum is σ = 81900288. Its totient is φ = 17976816.

The previous prime is 45221051. The next prime is 45221093. The reversal of 45221090 is 9012254.

It is not an unprimeable number, because it can be changed into a prime (45221093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12242 + ... + 15501.

It is an arithmetic number, because the mean of its divisors is an integer number (5118768).

Almost surely, 2^45221090 is an apocalyptic number.

45221090 is a deficient number, since it is larger than the sum of its proper divisors (36679198).

45221090 is a wasteful number, since it uses less digits than its factorization.

45221090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27913.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 45221090 is about 6724.6628168258. The cubic root of 45221090 is about 356.2708927934.

The spelling of 45221090 in words is "forty-five million, two hundred twenty-one thousand, ninety".