245844491 has 2 divisors, whose sum is σ = 245844492. Its totient is φ = 245844490.

The previous prime is 245844481. The next prime is 245844503. The reversal of 245844491 is 194448542.

It is a happy number.

245844491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245844491 - 2⁶ = 245844427 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 (245844421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122922245 + 122922246.

It is an arithmetic number, because the mean of its divisors is an integer number (122922246).

Almost surely, 2^245844491 is an apocalyptic number.

245844491 is a deficient number, since it is larger than the sum of its proper divisors (1).

245844491 is an equidigital number, since it uses as much as digits as its factorization.

245844491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 41.

The square root of 245844491 is about 15679.4289117939. The cubic root of 245844491 is about 626.4505962813.

The spelling of 245844491 in words is "two hundred forty-five million, eight hundred forty-four thousand, four hundred ninety-one".