245480491 has 2 divisors, whose sum is σ = 245480492. Its totient is φ = 245480490.

The previous prime is 245480461. The next prime is 245480497. The reversal of 245480491 is 194084542.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245480491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245480491.

It is not a weakly prime, because it can be changed into another prime (245480497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122740245 + 122740246.

It is an arithmetic number, because the mean of its divisors is an integer number (122740246).

Almost surely, 2^245480491 is an apocalyptic number.

245480491 is a deficient number, since it is larger than the sum of its proper divisors (1).

245480491 is an equidigital number, since it uses as much as digits as its factorization.

245480491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 245480491 is about 15667.8170464172. The cubic root of 245480491 is about 626.1412670667.

The spelling of 245480491 in words is "two hundred forty-five million, four hundred eighty thousand, four hundred ninety-one".