45518489 has 2 divisors, whose sum is σ = 45518490. Its totient is φ = 45518488.

The previous prime is 45518483. The next prime is 45518507. The reversal of 45518489 is 98481554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39589264 + 5929225 = 6292^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 45518489 - 2⁸ = 45518233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45518483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22759244 + 22759245.

It is an arithmetic number, because the mean of its divisors is an integer number (22759245).

Almost surely, 2^45518489 is an apocalyptic number.

It is an amenable number.

45518489 is a deficient number, since it is larger than the sum of its proper divisors (1).

45518489 is an equidigital number, since it uses as much as digits as its factorization.

45518489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 44.

The square root of 45518489 is about 6746.7391382801. The cubic root of 45518489 is about 357.0501986443.

The spelling of 45518489 in words is "forty-five million, five hundred eighteen thousand, four hundred eighty-nine".