249752563 has 2 divisors, whose sum is σ = 249752564. Its totient is φ = 249752562.

The previous prime is 249752543. The next prime is 249752567. The reversal of 249752563 is 365257942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249752563 - 2¹³ = 249744371 is a prime.

It is not a weakly prime, because it can be changed into another prime (249752567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124876281 + 124876282.

It is an arithmetic number, because the mean of its divisors is an integer number (124876282).

Almost surely, 2^249752563 is an apocalyptic number.

249752563 is a deficient number, since it is larger than the sum of its proper divisors (1).

249752563 is an equidigital number, since it uses as much as digits as its factorization.

249752563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 43.

The square root of 249752563 is about 15803.5617188025. The cubic root of 249752563 is about 629.7526222854.

The spelling of 249752563 in words is "two hundred forty-nine million, seven hundred fifty-two thousand, five hundred sixty-three".