261092959 has 2 divisors, whose sum is σ = 261092960. Its totient is φ = 261092958.

The previous prime is 261092957. The next prime is 261092963. The reversal of 261092959 is 959290162.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261092959 - 2¹ = 261092957 is a prime.

Together with 261092957, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261092957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130546479 + 130546480.

It is an arithmetic number, because the mean of its divisors is an integer number (130546480).

Almost surely, 2^261092959 is an apocalyptic number.

261092959 is a deficient number, since it is larger than the sum of its proper divisors (1).

261092959 is an equidigital number, since it uses as much as digits as its factorization.

261092959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 261092959 is about 16158.3711741004. The cubic root of 261092959 is about 639.1435149580.

The spelling of 261092959 in words is "two hundred sixty-one million, ninety-two thousand, nine hundred fifty-nine".