12573281 has 4 divisors (see below), whose sum is σ = 14369472. Its totient is φ = 10777092.

The previous prime is 12573277. The next prime is 12573283. The reversal of 12573281 is 18237521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18237521 = 941 ⋅19381.

It is a cyclic number.

It is not a de Polignac number, because 12573281 - 2² = 12573277 is a prime.

It is a super-2 number, since 2×12573281² = 316174790209922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12573283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 898085 + ... + 898098.

It is an arithmetic number, because the mean of its divisors is an integer number (3592368).

Almost surely, 2^12573281 is an apocalyptic number.

It is an amenable number.

12573281 is a deficient number, since it is larger than the sum of its proper divisors (1796191).

12573281 is an equidigital number, since it uses as much as digits as its factorization.

12573281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796190.

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

The square root of 12573281 is about 3545.8822597486. The cubic root of 12573281 is about 232.5320786663.

The spelling of 12573281 in words is "twelve million, five hundred seventy-three thousand, two hundred eighty-one".