45687569 has 2 divisors, whose sum is σ = 45687570. Its totient is φ = 45687568.

The previous prime is 45687559. The next prime is 45687581. The reversal of 45687569 is 96578654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27300625 + 18386944 = 5225^2 + 4288^2 .

It is a cyclic number.

It is not a de Polignac number, because 45687569 - 2⁴ = 45687553 is a prime.

It is a super-2 number, since 2×45687569² = 4174707922259522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (45687529) 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, 22843784 + 22843785.

It is an arithmetic number, because the mean of its divisors is an integer number (22843785).

Almost surely, 2^45687569 is an apocalyptic number.

It is an amenable number.

45687569 is a deficient number, since it is larger than the sum of its proper divisors (1).

45687569 is an equidigital number, since it uses as much as digits as its factorization.

45687569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 50.

The square root of 45687569 is about 6759.2580214103. The cubic root of 45687569 is about 357.4917441489.

The spelling of 45687569 in words is "forty-five million, six hundred eighty-seven thousand, five hundred sixty-nine".