45468581 has 4 divisors (see below), whose sum is σ = 45542892. Its totient is φ = 45394272.

The previous prime is 45468569. The next prime is 45468593. The reversal of 45468581 is 18586454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18586454 = 2 ⋅9293227.

It is an interprime number because it is at equal distance from previous prime (45468569) and next prime (45468593).

It can be written as a sum of positive squares in 2 ways, for example, as 6916900 + 38551681 = 2630^2 + 6209^2 .

It is a cyclic number.

It is not a de Polignac number, because 45468581 - 2⁶ = 45468517 is a prime.

It is a super-2 number, since 2×45468581² = 4134783716307122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45468481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36230 + ... + 37463.

It is an arithmetic number, because the mean of its divisors is an integer number (11385723).

Almost surely, 2^45468581 is an apocalyptic number.

It is an amenable number.

45468581 is a deficient number, since it is larger than the sum of its proper divisors (74311).

45468581 is an equidigital number, since it uses as much as digits as its factorization.

45468581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74310.

The product of its digits is 153600, while the sum is 41.

The square root of 45468581 is about 6743.0394482014. The cubic root of 45468581 is about 356.9196569797.

The spelling of 45468581 in words is "forty-five million, four hundred sixty-eight thousand, five hundred eighty-one".