13055021 has 12 divisors (see below), whose sum is σ = 15292188. Its totient is φ = 11112192.

The previous prime is 13054991. The next prime is 13055047. The reversal of 13055021 is 12055031.

13055021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8934121 + 4120900 = 2989^2 + 2030^2 .

It is not a de Polignac number, because 13055021 - 2¹⁴ = 13038637 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 (13051021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6845 + ... + 8541.

It is an arithmetic number, because the mean of its divisors is an integer number (1274349).

Almost surely, 2^13055021 is an apocalyptic number.

It is an amenable number.

13055021 is a deficient number, since it is larger than the sum of its proper divisors (2237167).

13055021 is a wasteful number, since it uses less digits than its factorization.

13055021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868 (or 1861 counting only the distinct ones).

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

The square root of 13055021 is about 3613.1732590619. The cubic root of 13055021 is about 235.4647269653.

The spelling of 13055021 in words is "thirteen million, fifty-five thousand, twenty-one".