261460097 has 2 divisors, whose sum is σ = 261460098. Its totient is φ = 261460096.

The previous prime is 261460039. The next prime is 261460099. The reversal of 261460097 is 790064162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142301041 + 119159056 = 11929^2 + 10916^2 .

It is a cyclic number.

It is not a de Polignac number, because 261460097 - 2⁶ = 261460033 is a prime.

It is a super-2 number, since 2×261460097² = 136722764646498818, which contains 22 as substring.

Together with 261460099, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (261460099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130730048 + 130730049.

It is an arithmetic number, because the mean of its divisors is an integer number (130730049).

Almost surely, 2^261460097 is an apocalyptic number.

It is an amenable number.

261460097 is a deficient number, since it is larger than the sum of its proper divisors (1).

261460097 is an equidigital number, since it uses as much as digits as its factorization.

261460097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 261460097 is about 16169.7277961010. The cubic root of 261460097 is about 639.4429536097.

The spelling of 261460097 in words is "two hundred sixty-one million, four hundred sixty thousand, ninety-seven".