45207689 has 2 divisors, whose sum is σ = 45207690. Its totient is φ = 45207688.

The previous prime is 45207677. The next prime is 45207733. The reversal of 45207689 is 98670254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41822089 + 3385600 = 6467^2 + 1840^2 .

It is a cyclic number.

It is not a de Polignac number, because 45207689 - 2¹² = 45203593 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (45207989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22603844 + 22603845.

It is an arithmetic number, because the mean of its divisors is an integer number (22603845).

Almost surely, 2^45207689 is an apocalyptic number.

It is an amenable number.

45207689 is a deficient number, since it is larger than the sum of its proper divisors (1).

45207689 is an equidigital number, since it uses as much as digits as its factorization.

45207689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 45207689 is about 6723.6663361592. Note that the first 3 decimals coincide. The cubic root of 45207689 is about 356.2356963991.

The spelling of 45207689 in words is "forty-five million, two hundred seven thousand, six hundred eighty-nine".