45881489 has 2 divisors, whose sum is σ = 45881490. Its totient is φ = 45881488.

The previous prime is 45881483. The next prime is 45881531. The reversal of 45881489 is 98418854.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44422225 + 1459264 = 6665^2 + 1208^2 .

It is a cyclic number.

It is not a de Polignac number, because 45881489 - 2⁸ = 45881233 is a prime.

It is a super-2 number, since 2×45881489² = 4210222065714242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45881483) 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, 22940744 + 22940745.

It is an arithmetic number, because the mean of its divisors is an integer number (22940745).

Almost surely, 2^45881489 is an apocalyptic number.

It is an amenable number.

45881489 is a deficient number, since it is larger than the sum of its proper divisors (1).

45881489 is an equidigital number, since it uses as much as digits as its factorization.

45881489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 368640, while the sum is 47.

The square root of 45881489 is about 6773.5876018547. The cubic root of 45881489 is about 357.9968191513.

The spelling of 45881489 in words is "forty-five million, eight hundred eighty-one thousand, four hundred eighty-nine".