45187613 has 2 divisors, whose sum is σ = 45187614. Its totient is φ = 45187612.

The previous prime is 45187603. The next prime is 45187627. The reversal of 45187613 is 31678154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44582329 + 605284 = 6677^2 + 778^2 .

It is a cyclic number.

It is not a de Polignac number, because 45187613 - 2⁸ = 45187357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45187603) 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, 22593806 + 22593807.

It is an arithmetic number, because the mean of its divisors is an integer number (22593807).

Almost surely, 2^45187613 is an apocalyptic number.

It is an amenable number.

45187613 is a deficient number, since it is larger than the sum of its proper divisors (1).

45187613 is an equidigital number, since it uses as much as digits as its factorization.

45187613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 45187613 is about 6722.1732348996. The cubic root of 45187613 is about 356.1829557635.

The spelling of 45187613 in words is "forty-five million, one hundred eighty-seven thousand, six hundred thirteen".