245023 has 2 divisors, whose sum is σ = 245024. Its totient is φ = 245022.

The previous prime is 244997. The next prime is 245029. The reversal of 245023 is 320542.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245023 is a prime.

It is equal to p₂₁₆₃₄ and since 245023 and 21634 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 244988 and 245006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245029) 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, 122511 + 122512.

It is an arithmetic number, because the mean of its divisors is an integer number (122512).

2²⁴⁵⁰²³ is an apocalyptic number.

245023 is a deficient number, since it is larger than the sum of its proper divisors (1).

245023 is an equidigital number, since it uses as much as digits as its factorization.

245023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 245023 is about 494.9979797939. The cubic root of 245023 is about 62.5752054699.

Adding to 245023 its reverse (320542), we get a palindrome (565565).

The spelling of 245023 in words is "two hundred forty-five thousand, twenty-three".