53818109 has 2 divisors, whose sum is σ = 53818110. Its totient is φ = 53818108.

The previous prime is 53818103. The next prime is 53818123. The reversal of 53818109 is 90181835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33988900 + 19829209 = 5830^2 + 4453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53818109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53818103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26909054 + 26909055.

It is an arithmetic number, because the mean of its divisors is an integer number (26909055).

Almost surely, 2^53818109 is an apocalyptic number.

It is an amenable number.

53818109 is a deficient number, since it is larger than the sum of its proper divisors (1).

53818109 is an equidigital number, since it uses as much as digits as its factorization.

53818109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 53818109 is about 7336.0826740162. The cubic root of 53818109 is about 377.5514518411.

The spelling of 53818109 in words is "fifty-three million, eight hundred eighteen thousand, one hundred nine".