245617259 has 2 divisors, whose sum is σ = 245617260. Its totient is φ = 245617258.

The previous prime is 245617231. The next prime is 245617261. The reversal of 245617259 is 952716542.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245617259 is a prime.

It is a Sophie Germain prime.

Together with 245617261, 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 (245617219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122808629 + 122808630.

It is an arithmetic number, because the mean of its divisors is an integer number (122808630).

Almost surely, 2^245617259 is an apocalyptic number.

245617259 is a deficient number, since it is larger than the sum of its proper divisors (1).

245617259 is an equidigital number, since it uses as much as digits as its factorization.

245617259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 245617259 is about 15672.1810543396. The cubic root of 245617259 is about 626.2575291092.

The spelling of 245617259 in words is "two hundred forty-five million, six hundred seventeen thousand, two hundred fifty-nine".