20540053 has 2 divisors, whose sum is σ = 20540054. Its totient is φ = 20540052.

The previous prime is 20540017. The next prime is 20540059. The reversal of 20540053 is 35004502.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11819844 + 8720209 = 3438^2 + 2953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20540053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20540053.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20540059) 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 as a sum of consecutive naturals, namely, 10270026 + 10270027.

It is an arithmetic number, because the mean of its divisors is an integer number (10270027).

Almost surely, 2^20540053 is an apocalyptic number.

It is an amenable number.

20540053 is a deficient number, since it is larger than the sum of its proper divisors (1).

20540053 is an equidigital number, since it uses as much as digits as its factorization.

20540053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 20540053 is about 4532.1135246152. The cubic root of 20540053 is about 273.8633102644.

Adding to 20540053 its reverse (35004502), we get a palindrome (55544555).

The spelling of 20540053 in words is "twenty million, five hundred forty thousand, fifty-three".