12261563 has 2 divisors, whose sum is σ = 12261564. Its totient is φ = 12261562.

The previous prime is 12261559. The next prime is 12261569. The reversal of 12261563 is 36516221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12261563 - 2² = 12261559 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12261569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6130781 + 6130782.

It is an arithmetic number, because the mean of its divisors is an integer number (6130782).

Almost surely, 2^12261563 is an apocalyptic number.

12261563 is a deficient number, since it is larger than the sum of its proper divisors (1).

12261563 is an equidigital number, since it uses as much as digits as its factorization.

12261563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 12261563 is about 3501.6514675221. The cubic root of 12261563 is about 230.5943230520.

Adding to 12261563 its reverse (36516221), we get a palindrome (48777784).

The spelling of 12261563 in words is "twelve million, two hundred sixty-one thousand, five hundred sixty-three".