245474491 has 2 divisors, whose sum is σ = 245474492. Its totient is φ = 245474490.

The previous prime is 245474447. The next prime is 245474497. The reversal of 245474491 is 194474542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245474491 - 2¹⁷ = 245343419 is a prime.

It is not a weakly prime, because it can be changed into another prime (245474497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122737245 + 122737246.

It is an arithmetic number, because the mean of its divisors is an integer number (122737246).

Almost surely, 2^245474491 is an apocalyptic number.

245474491 is a deficient number, since it is larger than the sum of its proper divisors (1).

245474491 is an equidigital number, since it uses as much as digits as its factorization.

245474491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The square root of 245474491 is about 15667.6255699452. The cubic root of 245474491 is about 626.1361656726.

The spelling of 245474491 in words is "two hundred forty-five million, four hundred seventy-four thousand, four hundred ninety-one".