45540491 has 2 divisors, whose sum is σ = 45540492. Its totient is φ = 45540490.

The previous prime is 45540487. The next prime is 45540493. The reversal of 45540491 is 19404554.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45540491 - 2² = 45540487 is a prime.

Together with 45540493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45540493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22770245 + 22770246.

It is an arithmetic number, because the mean of its divisors is an integer number (22770246).

Almost surely, 2^45540491 is an apocalyptic number.

45540491 is a deficient number, since it is larger than the sum of its proper divisors (1).

45540491 is an equidigital number, since it uses as much as digits as its factorization.

45540491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 45540491 is about 6748.3695067772. The cubic root of 45540491 is about 357.1077177846.

The spelling of 45540491 in words is "forty-five million, five hundred forty thousand, four hundred ninety-one".