20867053 has 4 divisors (see below), whose sum is σ = 20880828. Its totient is φ = 20853280.

The previous prime is 20867051. The next prime is 20867057. The reversal of 20867053 is 35076802.

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 11269449 + 9597604 = 3357^2 + 3098^2 .

It is a cyclic number.

It is not a de Polignac number, because 20867053 - 2¹ = 20867051 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 (20867051) 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, 4288 + ... + 7753.

It is an arithmetic number, because the mean of its divisors is an integer number (5220207).

Almost surely, 2^20867053 is an apocalyptic number.

It is an amenable number.

20867053 is a deficient number, since it is larger than the sum of its proper divisors (13775).

20867053 is a wasteful number, since it uses less digits than its factorization.

20867053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13774.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 20867053 is about 4568.0469568515. The cubic root of 20867053 is about 275.3089772354.

The spelling of 20867053 in words is "twenty million, eight hundred sixty-seven thousand, fifty-three".