45208090 has 16 divisors (see below), whose sum is σ = 81923400. Its totient is φ = 17961280.

The previous prime is 45208081. The next prime is 45208091. The reversal of 45208090 is 9080254.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18983449 + 26224641 = 4357^2 + 5121^2 .

It is not an unprimeable number, because it can be changed into a prime (45208091) 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, 13681 + ... + 16660.

Almost surely, 2^45208090 is an apocalyptic number.

45208090 is a deficient number, since it is larger than the sum of its proper divisors (36715310).

45208090 is a wasteful number, since it uses less digits than its factorization.

45208090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30497.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 45208090 is about 6723.6961561332. The cubic root of 45208090 is about 356.2367496867.

The spelling of 45208090 in words is "forty-five million, two hundred eight thousand, ninety".