245587 has 2 divisors, whose sum is σ = 245588. Its totient is φ = 245586.

The previous prime is 245563. The next prime is 245591. The reversal of 245587 is 785542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245587 - 2¹¹ = 243539 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (245527) 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, 122793 + 122794.

It is an arithmetic number, because the mean of its divisors is an integer number (122794).

2²⁴⁵⁵⁸⁷ is an apocalyptic number.

245587 is a deficient number, since it is larger than the sum of its proper divisors (1).

245587 is an equidigital number, since it uses as much as digits as its factorization.

245587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 31.

The square root of 245587 is about 495.5673516284. The cubic root of 245587 is about 62.6231810633.

The spelling of 245587 in words is "two hundred forty-five thousand, five hundred eighty-seven".