263561167 has 2 divisors, whose sum is σ = 263561168. Its totient is φ = 263561166.

The previous prime is 263561153. The next prime is 263561173. The reversal of 263561167 is 761165362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263561167 - 2¹¹ = 263559119 is a prime.

It is a super-3 number, since 3×263561167³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263561267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131780583 + 131780584.

It is an arithmetic number, because the mean of its divisors is an integer number (131780584).

Almost surely, 2^263561167 is an apocalyptic number.

263561167 is a deficient number, since it is larger than the sum of its proper divisors (1).

263561167 is an equidigital number, since it uses as much as digits as its factorization.

263561167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 263561167 is about 16234.5670407313. The cubic root of 263561167 is about 641.1512214173.

The spelling of 263561167 in words is "two hundred sixty-three million, five hundred sixty-one thousand, one hundred sixty-seven".