245513 has 2 divisors, whose sum is σ = 245514. Its totient is φ = 245512.

The previous prime is 245501. The next prime is 245519. The reversal of 245513 is 315542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204304 + 41209 = 452^2 + 203^2 .

It is a cyclic number.

It is not a de Polignac number, because 245513 - 2⁸ = 245257 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 245513.

It is not a weakly prime, because it can be changed into another prime (245519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122756 + 122757.

It is an arithmetic number, because the mean of its divisors is an integer number (122757).

2²⁴⁵⁵¹³ is an apocalyptic number.

It is an amenable number.

245513 is a deficient number, since it is larger than the sum of its proper divisors (1).

245513 is an equidigital number, since it uses as much as digits as its factorization.

245513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 20.

The square root of 245513 is about 495.4926841034. The cubic root of 245513 is about 62.6168905825.

The spelling of 245513 in words is "two hundred forty-five thousand, five hundred thirteen".