115571493 has 6 divisors (see below), whose sum is σ = 166936614. Its totient is φ = 77047656.

The previous prime is 115571453. The next prime is 115571531. The reversal of 115571493 is 394175511.

It is a happy number.

115571493 is a `hidden beast` number, since 1 + 1 + 557 + 14 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 79174404 + 36397089 = 8898^2 + 6033^2 .

It is not a de Polignac number, because 115571493 - 2¹⁸ = 115309349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115571413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6420630 + ... + 6420647.

It is an arithmetic number, because the mean of its divisors is an integer number (27822769).

Almost surely, 2^115571493 is an apocalyptic number.

It is an amenable number.

115571493 is a deficient number, since it is larger than the sum of its proper divisors (51365121).

115571493 is a wasteful number, since it uses less digits than its factorization.

115571493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12841283 (or 12841280 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 115571493 is about 10750.4182709325. The cubic root of 115571493 is about 487.0986297910.

The spelling of 115571493 in words is "one hundred fifteen million, five hundred seventy-one thousand, four hundred ninety-three".