115403539 has 2 divisors, whose sum is σ = 115403540. Its totient is φ = 115403538.

The previous prime is 115403501. The next prime is 115403579. The reversal of 115403539 is 935304511.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (935304511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115403539 - 2⁹ = 115403027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115403539.

It is not a weakly prime, because it can be changed into another prime (115403579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57701769 + 57701770.

It is an arithmetic number, because the mean of its divisors is an integer number (57701770).

Almost surely, 2^115403539 is an apocalyptic number.

115403539 is a deficient number, since it is larger than the sum of its proper divisors (1).

115403539 is an equidigital number, since it uses as much as digits as its factorization.

115403539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 115403539 is about 10742.6039208378. The cubic root of 115403539 is about 486.8625570845.

The spelling of 115403539 in words is "one hundred fifteen million, four hundred three thousand, five hundred thirty-nine".