45638291 has 2 divisors, whose sum is σ = 45638292. Its totient is φ = 45638290.

The previous prime is 45638273. The next prime is 45638347. The reversal of 45638291 is 19283654.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45638291 - 2⁶ = 45638227 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45638891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22819145 + 22819146.

It is an arithmetic number, because the mean of its divisors is an integer number (22819146).

Almost surely, 2^45638291 is an apocalyptic number.

45638291 is a deficient number, since it is larger than the sum of its proper divisors (1).

45638291 is an equidigital number, since it uses as much as digits as its factorization.

45638291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 45638291 is about 6755.6118153725. The cubic root of 45638291 is about 357.3631693091.

The spelling of 45638291 in words is "forty-five million, six hundred thirty-eight thousand, two hundred ninety-one".