45555689 has 2 divisors, whose sum is σ = 45555690. Its totient is φ = 45555688.

The previous prime is 45555683. The next prime is 45555691. The reversal of 45555689 is 98655554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25080064 + 20475625 = 5008^2 + 4525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45555689 is a prime.

It is a Sophie Germain prime.

Together with 45555691, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (45555683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22777844 + 22777845.

It is an arithmetic number, because the mean of its divisors is an integer number (22777845).

Almost surely, 2^45555689 is an apocalyptic number.

It is an amenable number.

45555689 is a deficient number, since it is larger than the sum of its proper divisors (1).

45555689 is an equidigital number, since it uses as much as digits as its factorization.

45555689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080000, while the sum is 47.

The square root of 45555689 is about 6749.4954626253. The cubic root of 45555689 is about 357.1474386231.

The spelling of 45555689 in words is "forty-five million, five hundred fifty-five thousand, six hundred eighty-nine".