45608581 has 2 divisors, whose sum is σ = 45608582. Its totient is φ = 45608580.

The previous prime is 45608579. The next prime is 45608587. The reversal of 45608581 is 18580654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36360900 + 9247681 = 6030^2 + 3041^2 .

It is a cyclic number.

It is not a de Polignac number, because 45608581 - 2¹ = 45608579 is a prime.

It is a super-2 number, since 2×45608581² = 4160285321667122, which contains 22 as substring.

Together with 45608579, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 45608581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45608587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22804290 + 22804291.

It is an arithmetic number, because the mean of its divisors is an integer number (22804291).

Almost surely, 2^45608581 is an apocalyptic number.

It is an amenable number.

45608581 is a deficient number, since it is larger than the sum of its proper divisors (1).

45608581 is an equidigital number, since it uses as much as digits as its factorization.

45608581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 45608581 is about 6753.4125447806. The cubic root of 45608581 is about 357.2856060447.

The spelling of 45608581 in words is "forty-five million, six hundred eight thousand, five hundred eighty-one".