115271493 has 4 divisors (see below), whose sum is σ = 153695328. Its totient is φ = 76847660.

The previous prime is 115271489. The next prime is 115271503. The reversal of 115271493 is 394172511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 394172511 = 3 ⋅131390837.

It is a cyclic number.

It is not a de Polignac number, because 115271493 - 2² = 115271489 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115271473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19211913 + ... + 19211918.

It is an arithmetic number, because the mean of its divisors is an integer number (38423832).

Almost surely, 2^115271493 is an apocalyptic number.

It is an amenable number.

115271493 is a deficient number, since it is larger than the sum of its proper divisors (38423835).

115271493 is an equidigital number, since it uses as much as digits as its factorization.

115271493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38423834.

The product of its digits is 7560, while the sum is 33.

The square root of 115271493 is about 10736.4562589339. The cubic root of 115271493 is about 486.6767950499.

The spelling of 115271493 in words is "one hundred fifteen million, two hundred seventy-one thousand, four hundred ninety-three".