115103509 has 2 divisors, whose sum is σ = 115103510. Its totient is φ = 115103508.

The previous prime is 115103507. The next prime is 115103519. The reversal of 115103509 is 905301511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93508900 + 21594609 = 9670^2 + 4647^2 .

It is a cyclic number.

It is not a de Polignac number, because 115103509 - 2¹ = 115103507 is a prime.

It is a super-2 number, since 2×115103509² = 26497635568226162, which contains 22 as substring.

Together with 115103507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115103503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57551754 + 57551755.

It is an arithmetic number, because the mean of its divisors is an integer number (57551755).

Almost surely, 2^115103509 is an apocalyptic number.

It is an amenable number.

115103509 is a deficient number, since it is larger than the sum of its proper divisors (1).

115103509 is an equidigital number, since it uses as much as digits as its factorization.

115103509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 675, while the sum is 25.

The square root of 115103509 is about 10728.6303412877. The cubic root of 115103509 is about 486.4402703671.

The spelling of 115103509 in words is "one hundred fifteen million, one hundred three thousand, five hundred nine".