20053013 has 4 divisors (see below), whose sum is σ = 21232620. Its totient is φ = 18873408.

The previous prime is 20053009. The next prime is 20053021. The reversal of 20053013 is 31035002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31035002 = 2 ⋅15517501.

It can be written as a sum of positive squares in 2 ways, for example, as 15697444 + 4355569 = 3962^2 + 2087^2 .

It is a cyclic number.

It is not a de Polignac number, because 20053013 - 2² = 20053009 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 (20053043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589778 + ... + 589811.

It is an arithmetic number, because the mean of its divisors is an integer number (5308155).

Almost surely, 2^20053013 is an apocalyptic number.

It is an amenable number.

20053013 is a deficient number, since it is larger than the sum of its proper divisors (1179607).

20053013 is a wasteful number, since it uses less digits than its factorization.

20053013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179606.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 20053013 is about 4478.0590661580. The cubic root of 20053013 is about 271.6813824356.

Adding to 20053013 its reverse (31035002), we get a palindrome (51088015).

The spelling of 20053013 in words is "twenty million, fifty-three thousand, thirteen".