12813055 has 4 divisors (see below), whose sum is σ = 15375672. Its totient is φ = 10250440.

The previous prime is 12813037. The next prime is 12813083. The reversal of 12813055 is 55031821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12813055 - 2⁵ = 12813023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281301 + ... + 1281310.

It is an arithmetic number, because the mean of its divisors is an integer number (3843918).

Almost surely, 2^12813055 is an apocalyptic number.

12813055 is a deficient number, since it is larger than the sum of its proper divisors (2562617).

12813055 is an equidigital number, since it uses as much as digits as its factorization.

12813055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562616.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 12813055 is about 3579.5327907424. The cubic root of 12813055 is about 234.0009192259. Note that the first 3 decimals are identical.

Adding to 12813055 its reverse (55031821), we get a palindrome (67844876).

The spelling of 12813055 in words is "twelve million, eight hundred thirteen thousand, fifty-five".