245039 has 2 divisors, whose sum is σ = 245040. Its totient is φ = 245038.

The previous prime is 245033. The next prime is 245071. The reversal of 245039 is 930542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245039 - 2⁴ = 245023 is a prime.

It is a super-2 number, since 2×245039² = 120088223042, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122519 + 122520.

It is an arithmetic number, because the mean of its divisors is an integer number (122520).

2²⁴⁵⁰³⁹ is an apocalyptic number.

245039 is a deficient number, since it is larger than the sum of its proper divisors (1).

245039 is an equidigital number, since it uses as much as digits as its factorization.

245039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 245039 is about 495.0141412121. The cubic root of 245039 is about 62.5765674937.

The spelling of 245039 in words is "two hundred forty-five thousand, thirty-nine".