109365257 has 2 divisors, whose sum is σ = 109365258. Its totient is φ = 109365256.

The previous prime is 109365251. The next prime is 109365281. The reversal of 109365257 is 752563901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65593801 + 43771456 = 8099^2 + 6616^2 .

It is a cyclic number.

It is not a de Polignac number, because 109365257 - 2⁸ = 109365001 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109365257.

It is not a weakly prime, because it can be changed into another prime (109365251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54682628 + 54682629.

It is an arithmetic number, because the mean of its divisors is an integer number (54682629).

Almost surely, 2^109365257 is an apocalyptic number.

It is an amenable number.

109365257 is a deficient number, since it is larger than the sum of its proper divisors (1).

109365257 is an equidigital number, since it uses as much as digits as its factorization.

109365257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 109365257 is about 10457.7845168085. The cubic root of 109365257 is about 478.2185951278.

The spelling of 109365257 in words is "one hundred nine million, three hundred sixty-five thousand, two hundred fifty-seven".