115017391 has 8 divisors (see below), whose sum is σ = 117764784. Its totient is φ = 112297920.

The previous prime is 115017361. The next prime is 115017407. The reversal of 115017391 is 193710511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115017391 - 2¹⁷ = 114886319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115017361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1476 + ... + 15238.

It is an arithmetic number, because the mean of its divisors is an integer number (14720598).

Almost surely, 2^115017391 is an apocalyptic number.

115017391 is a deficient number, since it is larger than the sum of its proper divisors (2747393).

115017391 is a wasteful number, since it uses less digits than its factorization.

115017391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13961.

The product of its (nonzero) digits is 945, while the sum is 28.

The square root of 115017391 is about 10724.6161236662. The cubic root of 115017391 is about 486.3189253409.

It can be divided in two parts, 1150 and 17391, that multiplied together give a triangular number (19999650 = T₆₃₂₄).

The spelling of 115017391 in words is "one hundred fifteen million, seventeen thousand, three hundred ninety-one".