261167 has 2 divisors, whose sum is σ = 261168. Its totient is φ = 261166.

The previous prime is 261127. The next prime is 261169. The reversal of 261167 is 761162.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261167 is a prime.

It is a super-3 number, since 3×261167³ = 53441194388233389, which contains 333 as substring.

Together with 261169, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261169) 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, 130583 + 130584.

It is an arithmetic number, because the mean of its divisors is an integer number (130584).

2²⁶¹¹⁶⁷ is an apocalyptic number.

261167 is a deficient number, since it is larger than the sum of its proper divisors (1).

261167 is an equidigital number, since it uses as much as digits as its factorization.

261167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 23.

The square root of 261167 is about 511.0450078026. The cubic root of 261167 is about 63.9203925565.

The spelling of 261167 in words is "two hundred sixty-one thousand, one hundred sixty-seven".