261160597 has 2 divisors, whose sum is σ = 261160598. Its totient is φ = 261160596.

The previous prime is 261160589. The next prime is 261160637. The reversal of 261160597 is 795061162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228795876 + 32364721 = 15126^2 + 5689^2 .

It is a cyclic number.

It is not a de Polignac number, because 261160597 - 2³ = 261160589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261160897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130580298 + 130580299.

It is an arithmetic number, because the mean of its divisors is an integer number (130580299).

Almost surely, 2^261160597 is an apocalyptic number.

It is an amenable number.

261160597 is a deficient number, since it is larger than the sum of its proper divisors (1).

261160597 is an equidigital number, since it uses as much as digits as its factorization.

261160597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 261160597 is about 16160.4640094275. The cubic root of 261160597 is about 639.1987017603.

The spelling of 261160597 in words is "two hundred sixty-one million, one hundred sixty thousand, five hundred ninety-seven".