12863553 has 4 divisors (see below), whose sum is σ = 17151408. Its totient is φ = 8575700.

The previous prime is 12863537. The next prime is 12863561. The reversal of 12863553 is 35536821.

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.

It is a cyclic number.

It is not a de Polignac number, because 12863553 - 2⁴ = 12863537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12863573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2143923 + ... + 2143928.

It is an arithmetic number, because the mean of its divisors is an integer number (4287852).

Almost surely, 2^12863553 is an apocalyptic number.

It is an amenable number.

12863553 is a deficient number, since it is larger than the sum of its proper divisors (4287855).

12863553 is an equidigital number, since it uses as much as digits as its factorization.

12863553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4287854.

The product of its digits is 21600, while the sum is 33.

The square root of 12863553 is about 3586.5795683353. The cubic root of 12863553 is about 234.3079261221.

The spelling of 12863553 in words is "twelve million, eight hundred sixty-three thousand, five hundred fifty-three".