12261503 has 2 divisors, whose sum is σ = 12261504. Its totient is φ = 12261502.

The previous prime is 12261481. The next prime is 12261521. The reversal of 12261503 is 30516221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12261503 - 2¹² = 12257407 is a prime.

It is a Sophie Germain prime.

It is equal to p₈₀₄₀₆₂ and since 12261503 and 804062 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12261533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6130751 + 6130752.

It is an arithmetic number, because the mean of its divisors is an integer number (6130752).

Almost surely, 2^12261503 is an apocalyptic number.

12261503 is a deficient number, since it is larger than the sum of its proper divisors (1).

12261503 is an equidigital number, since it uses as much as digits as its factorization.

12261503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 12261503 is about 3501.6429001256. The cubic root of 12261503 is about 230.5939469259.

Adding to 12261503 its reverse (30516221), we get a palindrome (42777724).

The spelling of 12261503 in words is "twelve million, two hundred sixty-one thousand, five hundred three".