245779291 has 2 divisors, whose sum is σ = 245779292. Its totient is φ = 245779290.

The previous prime is 245779277. The next prime is 245779301. The reversal of 245779291 is 192977542.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245779291 - 2²³ = 237390683 is a prime.

It is not a weakly prime, because it can be changed into another prime (245779201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122889645 + 122889646.

It is an arithmetic number, because the mean of its divisors is an integer number (122889646).

Almost surely, 2^245779291 is an apocalyptic number.

245779291 is a deficient number, since it is larger than the sum of its proper divisors (1).

245779291 is an equidigital number, since it uses as much as digits as its factorization.

245779291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 245779291 is about 15677.3496165647. The cubic root of 245779291 is about 626.3952114186.

The spelling of 245779291 in words is "two hundred forty-five million, seven hundred seventy-nine thousand, two hundred ninety-one".