12546563 has 4 divisors (see below), whose sum is σ = 12563568. Its totient is φ = 12529560.

The previous prime is 12546559. The next prime is 12546571. The reversal of 12546563 is 36564521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36564521 = 7 ⋅5223503.

It is a cyclic number.

It is not a de Polignac number, because 12546563 - 2² = 12546559 is a prime.

It is a super-2 number, since 2×12546563² = 314832486225938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12546463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7343 + ... + 8888.

It is an arithmetic number, because the mean of its divisors is an integer number (3140892).

Almost surely, 2^12546563 is an apocalyptic number.

12546563 is a deficient number, since it is larger than the sum of its proper divisors (17005).

12546563 is an equidigital number, since it uses as much as digits as its factorization.

12546563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17004.

The product of its digits is 21600, while the sum is 32.

The square root of 12546563 is about 3542.1127875888. The cubic root of 12546563 is about 232.3672530075.

The spelling of 12546563 in words is "twelve million, five hundred forty-six thousand, five hundred sixty-three".