1158497 has 4 divisors (see below), whose sum is σ = 1175856. Its totient is φ = 1141140.

The previous prime is 1158491. The next prime is 1158523. The reversal of 1158497 is 7948511.

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.

It is a cyclic number.

It is not a de Polignac number, because 1158497 - 2⁴ = 1158481 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1158491) 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, 8579 + ... + 8712.

It is an arithmetic number, because the mean of its divisors is an integer number (293964).

2^1158497 is an apocalyptic number.

It is an amenable number.

1158497 is a deficient number, since it is larger than the sum of its proper divisors (17359).

1158497 is an equidigital number, since it uses as much as digits as its factorization.

1158497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17358.

The product of its digits is 10080, while the sum is 35.

The square root of 1158497 is about 1076.3349850302. The cubic root of 1158497 is about 105.0263577065.

The spelling of 1158497 in words is "one million, one hundred fifty-eight thousand, four hundred ninety-seven".