12281573 has 2 divisors, whose sum is σ = 12281574. Its totient is φ = 12281572.

The previous prime is 12281539. The next prime is 12281597. The reversal of 12281573 is 37518221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8773444 + 3508129 = 2962^2 + 1873^2 .

It is a cyclic number.

It is not a de Polignac number, because 12281573 - 2⁸ = 12281317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12281173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6140786 + 6140787.

It is an arithmetic number, because the mean of its divisors is an integer number (6140787).

Almost surely, 2^12281573 is an apocalyptic number.

It is an amenable number.

12281573 is a deficient number, since it is larger than the sum of its proper divisors (1).

12281573 is an equidigital number, since it uses as much as digits as its factorization.

12281573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 29.

The square root of 12281573 is about 3504.5075260299. The cubic root of 12281573 is about 230.7196927314.

Adding to 12281573 its reverse (37518221), we get a palindrome (49799794).

It can be divided in two parts, 122815 and 73, that multiplied together give a triangular number (8965495 = T₄₂₃₄).

The spelling of 12281573 in words is "twelve million, two hundred eighty-one thousand, five hundred seventy-three".