45243189 has 6 divisors (see below), whose sum is σ = 65351286. Its totient is φ = 30162120.

The previous prime is 45243173. The next prime is 45243197. The reversal of 45243189 is 98134254.

It can be written as a sum of positive squares in only one way, i.e., 31979025 + 13264164 = 5655^2 + 3642^2 .

It is not a de Polignac number, because 45243189 - 2⁴ = 45243173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45243169) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2513502 + ... + 2513519.

It is an arithmetic number, because the mean of its divisors is an integer number (10891881).

Almost surely, 2^45243189 is an apocalyptic number.

It is an amenable number.

45243189 is a deficient number, since it is larger than the sum of its proper divisors (20108097).

45243189 is a wasteful number, since it uses less digits than its factorization.

45243189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027027 (or 5027024 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 45243189 is about 6726.3057468420. The cubic root of 45243189 is about 356.3289184350.

The spelling of 45243189 in words is "forty-five million, two hundred forty-three thousand, one hundred eighty-nine".