1155493 has 4 divisors (see below), whose sum is σ = 1166400. Its totient is φ = 1144588.

The previous prime is 1155461. The next prime is 1155499. The reversal of 1155493 is 3945511.

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: 3945511 = 547 ⋅7213.

It is a cyclic number.

It is not a de Polignac number, because 1155493 - 2⁵ = 1155461 is a prime.

It is an Ulam number.

It is a Duffinian number.

1155493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155499) 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, 5293 + ... + 5506.

It is an arithmetic number, because the mean of its divisors is an integer number (291600).

2^1155493 is an apocalyptic number.

It is an amenable number.

1155493 is a deficient number, since it is larger than the sum of its proper divisors (10907).

1155493 is a wasteful number, since it uses less digits than its factorization.

1155493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10906.

The product of its digits is 2700, while the sum is 28.

The square root of 1155493 is about 1074.9386028979. The cubic root of 1155493 is about 104.9355008261.

The spelling of 1155493 in words is "one million, one hundred fifty-five thousand, four hundred ninety-three".