253783109 has 2 divisors, whose sum is σ = 253783110. Its totient is φ = 253783108.

The previous prime is 253783097. The next prime is 253783139. The reversal of 253783109 is 901387352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130462084 + 123321025 = 11422^2 + 11105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253783109 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 (253783139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126891554 + 126891555.

It is an arithmetic number, because the mean of its divisors is an integer number (126891555).

Almost surely, 2^253783109 is an apocalyptic number.

It is an amenable number.

253783109 is a deficient number, since it is larger than the sum of its proper divisors (1).

253783109 is an equidigital number, since it uses as much as digits as its factorization.

253783109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 253783109 is about 15930.5715214489. The cubic root of 253783109 is about 633.1222424549.

The spelling of 253783109 in words is "two hundred fifty-three million, seven hundred eighty-three thousand, one hundred nine".