13021055 has 4 divisors (see below), whose sum is σ = 15625272. Its totient is φ = 10416840.

The previous prime is 13021051. The next prime is 13021069. The reversal of 13021055 is 55012031.

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

It is not a de Polignac number, because 13021055 - 2² = 13021051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302101 + ... + 1302110.

It is an arithmetic number, because the mean of its divisors is an integer number (3906318).

Almost surely, 2^13021055 is an apocalyptic number.

13021055 is a deficient number, since it is larger than the sum of its proper divisors (2604217).

13021055 is an equidigital number, since it uses as much as digits as its factorization.

13021055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604216.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 13021055 is about 3608.4698973388. The cubic root of 13021055 is about 235.2603422291.

Adding to 13021055 its reverse (55012031), we get a palindrome (68033086).

The spelling of 13021055 in words is "thirteen million, twenty-one thousand, fifty-five".