12280591 has 2 divisors, whose sum is σ = 12280592. Its totient is φ = 12280590.

The previous prime is 12280573. The next prime is 12280621. The reversal of 12280591 is 19508221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12280591 - 2¹¹ = 12278543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12280531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6140295 + 6140296.

It is an arithmetic number, because the mean of its divisors is an integer number (6140296).

Almost surely, 2^12280591 is an apocalyptic number.

12280591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12280591 is an equidigital number, since it uses as much as digits as its factorization.

12280591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 12280591 is about 3504.3674179515. The cubic root of 12280591 is about 230.7135433351.

The spelling of 12280591 in words is "twelve million, two hundred eighty thousand, five hundred ninety-one".