13054021 has 4 divisors (see below), whose sum is σ = 13067692. Its totient is φ = 13040352.

The previous prime is 13054003. The next prime is 13054033. The reversal of 13054021 is 12045031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7365796 + 5688225 = 2714^2 + 2385^2 .

It is a cyclic number.

It is not a de Polignac number, because 13054021 - 2²³ = 4665413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13053986 and 13054004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13054421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5286 + ... + 7351.

It is an arithmetic number, because the mean of its divisors is an integer number (3266923).

Almost surely, 2^13054021 is an apocalyptic number.

It is an amenable number.

13054021 is a deficient number, since it is larger than the sum of its proper divisors (13671).

13054021 is a wasteful number, since it uses less digits than its factorization.

13054021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13670.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13054021 is about 3613.0348738976. The cubic root of 13054021 is about 235.4587147002.

Adding to 13054021 its reverse (12045031), we get a palindrome (25099052).

The spelling of 13054021 in words is "thirteen million, fifty-four thousand, twenty-one".