249563 has 2 divisors, whose sum is σ = 249564. Its totient is φ = 249562.

The previous prime is 249541. The next prime is 249583. The reversal of 249563 is 365942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249563 - 2⁶ = 249499 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (249503) 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, 124781 + 124782.

It is an arithmetic number, because the mean of its divisors is an integer number (124782).

2²⁴⁹⁵⁶³ is an apocalyptic number.

249563 is a deficient number, since it is larger than the sum of its proper divisors (1).

249563 is an equidigital number, since it uses as much as digits as its factorization.

249563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 29.

The square root of 249563 is about 499.5628088639. The cubic root of 249563 is about 62.9593253868.

Multiplying 249563 by its sum of digits (29), we get a palindrome (7237327).

The spelling of 249563 in words is "two hundred forty-nine thousand, five hundred sixty-three".