45587209 has 2 divisors, whose sum is σ = 45587210. Its totient is φ = 45587208.

The previous prime is 45587207. The next prime is 45587233. The reversal of 45587209 is 90278554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40921609 + 4665600 = 6397^2 + 2160^2 .

It is a cyclic number.

It is not a de Polignac number, because 45587209 - 2¹ = 45587207 is a prime.

Together with 45587207, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45587207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22793604 + 22793605.

It is an arithmetic number, because the mean of its divisors is an integer number (22793605).

Almost surely, 2^45587209 is an apocalyptic number.

It is an amenable number.

45587209 is a deficient number, since it is larger than the sum of its proper divisors (1).

45587209 is an equidigital number, since it uses as much as digits as its factorization.

45587209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 45587209 is about 6751.8300482166. The cubic root of 45587209 is about 357.2297897865.

It can be divided in two parts, 45587 and 209, that added together give a square (45796 = 214²).

The spelling of 45587209 in words is "forty-five million, five hundred eighty-seven thousand, two hundred nine".