20481053 has 4 divisors (see below), whose sum is σ = 20545980. Its totient is φ = 20416128.

The previous prime is 20481037. The next prime is 20481059. The reversal of 20481053 is 35018402.

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 7828804 + 12652249 = 2798^2 + 3557^2 .

It is a cyclic number.

It is not a de Polignac number, because 20481053 - 2⁴ = 20481037 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 (20481059) 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, 31988 + ... + 32621.

It is an arithmetic number, because the mean of its divisors is an integer number (5136495).

Almost surely, 2^20481053 is an apocalyptic number.

It is an amenable number.

20481053 is a deficient number, since it is larger than the sum of its proper divisors (64927).

20481053 is an equidigital number, since it uses as much as digits as its factorization.

20481053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64926.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20481053 is about 4525.5997392611. The cubic root of 20481053 is about 273.6008404626.

Adding to 20481053 its reverse (35018402), we get a palindrome (55499455).

The spelling of 20481053 in words is "twenty million, four hundred eighty-one thousand, fifty-three".