45442291 has 2 divisors, whose sum is σ = 45442292. Its totient is φ = 45442290.

The previous prime is 45442289. The next prime is 45442321. The reversal of 45442291 is 19224454.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45442291 - 2¹ = 45442289 is a prime.

It is a super-2 number, since 2×45442291² = 4130003622657362, which contains 22 as substring.

Together with 45442289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45449291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22721145 + 22721146.

It is an arithmetic number, because the mean of its divisors is an integer number (22721146).

Almost surely, 2^45442291 is an apocalyptic number.

45442291 is a deficient number, since it is larger than the sum of its proper divisors (1).

45442291 is an equidigital number, since it uses as much as digits as its factorization.

45442291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 31.

The square root of 45442291 is about 6741.0897486979. The cubic root of 45442291 is about 356.8508532280.

The spelling of 45442291 in words is "forty-five million, four hundred forty-two thousand, two hundred ninety-one".