20053109 has 2 divisors, whose sum is σ = 20053110. Its totient is φ = 20053108.

The previous prime is 20053091. The next prime is 20053129. The reversal of 20053109 is 90135002.

Together with previous prime (20053091) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (20053129) can be obtained adding 20053109 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20052484 + 625 = 4478^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 20053109 - 2¹⁶ = 19987573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20053129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10026554 + 10026555.

It is an arithmetic number, because the mean of its divisors is an integer number (10026555).

Almost surely, 2^20053109 is an apocalyptic number.

It is an amenable number.

20053109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20053109 is an equidigital number, since it uses as much as digits as its factorization.

20053109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 20053109 is about 4478.0697850748. The cubic root of 20053109 is about 271.6818159760.

The spelling of 20053109 in words is "twenty million, fifty-three thousand, one hundred nine".