261517327 has 2 divisors, whose sum is σ = 261517328. Its totient is φ = 261517326.

The previous prime is 261517283. The next prime is 261517367. The reversal of 261517327 is 723715162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261517327 - 2¹¹ = 261515279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261517292 and 261517301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261517367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130758663 + 130758664.

It is an arithmetic number, because the mean of its divisors is an integer number (130758664).

Almost surely, 2^261517327 is an apocalyptic number.

261517327 is a deficient number, since it is larger than the sum of its proper divisors (1).

261517327 is an equidigital number, since it uses as much as digits as its factorization.

261517327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 34.

The square root of 261517327 is about 16171.4973641899. The cubic root of 261517327 is about 639.4896052797.

The spelling of 261517327 in words is "two hundred sixty-one million, five hundred seventeen thousand, three hundred twenty-seven".