20181053 has 2 divisors, whose sum is σ = 20181054. Its totient is φ = 20181052.

The previous prime is 20181047. The next prime is 20181079. The reversal of 20181053 is 35018102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18472804 + 1708249 = 4298^2 + 1307^2 .

It is a cyclic number.

It is not a de Polignac number, because 20181053 - 2¹⁸ = 19918909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20181043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10090526 + 10090527.

It is an arithmetic number, because the mean of its divisors is an integer number (10090527).

Almost surely, 2^20181053 is an apocalyptic number.

It is an amenable number.

20181053 is a deficient number, since it is larger than the sum of its proper divisors (1).

20181053 is an equidigital number, since it uses as much as digits as its factorization.

20181053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 20181053 is about 4492.3326902624. The cubic root of 20181053 is about 272.2583914611.

Adding to 20181053 its reverse (35018102), we get a palindrome (55199155).

The spelling of 20181053 in words is "twenty million, one hundred eighty-one thousand, fifty-three".