245445559 has 2 divisors, whose sum is σ = 245445560. Its totient is φ = 245445558.

The previous prime is 245445533. The next prime is 245445611. The reversal of 245445559 is 955544542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245445559 - 2⁵ = 245445527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245442559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122722779 + 122722780.

It is an arithmetic number, because the mean of its divisors is an integer number (122722780).

Almost surely, 2^245445559 is an apocalyptic number.

245445559 is a deficient number, since it is larger than the sum of its proper divisors (1).

245445559 is an equidigital number, since it uses as much as digits as its factorization.

245445559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720000, while the sum is 43.

The square root of 245445559 is about 15666.7022375483. The cubic root of 245445559 is about 626.1115655831. Note that the first 3 decimals are identical.

It can be divided in two parts, 24544 and 5559, that added together give a palindrome (30103).

The spelling of 245445559 in words is "two hundred forty-five million, four hundred forty-five thousand, five hundred fifty-nine".