115101491 has 4 divisors (see below), whose sum is σ = 115135800. Its totient is φ = 115067184.

The previous prime is 115101479. The next prime is 115101521. The reversal of 115101491 is 194101511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194101511 = 19 ⋅10215869.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115101491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115103491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11501 + ... + 19038.

It is an arithmetic number, because the mean of its divisors is an integer number (28783950).

Almost surely, 2^115101491 is an apocalyptic number.

115101491 is a deficient number, since it is larger than the sum of its proper divisors (34309).

115101491 is an equidigital number, since it uses as much as digits as its factorization.

115101491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34308.

The product of its (nonzero) digits is 180, while the sum is 23.

The square root of 115101491 is about 10728.5362934559. The cubic root of 115101491 is about 486.4374275861.

The spelling of 115101491 in words is "one hundred fifteen million, one hundred one thousand, four hundred ninety-one".