45236209 has 2 divisors, whose sum is σ = 45236210. Its totient is φ = 45236208.

The previous prime is 45236179. The next prime is 45236221. The reversal of 45236209 is 90263254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36663025 + 8573184 = 6055^2 + 2928^2 .

It is a cyclic number.

It is not a de Polignac number, because 45236209 - 2¹³ = 45228017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45236509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22618104 + 22618105.

It is an arithmetic number, because the mean of its divisors is an integer number (22618105).

Almost surely, 2^45236209 is an apocalyptic number.

It is an amenable number.

45236209 is a deficient number, since it is larger than the sum of its proper divisors (1).

45236209 is an equidigital number, since it uses as much as digits as its factorization.

45236209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 45236209 is about 6725.7868684638. The cubic root of 45236209 is about 356.3105929970.

The spelling of 45236209 in words is "forty-five million, two hundred thirty-six thousand, two hundred nine".