1117543 has 6 divisors (see below), whose sum is σ = 1300056. Its totient is φ = 957852.

The previous prime is 1117513. The next prime is 1117549. The reversal of 1117543 is 3457111.

It is not a de Polignac number, because 1117543 - 2⁹ = 1117031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117549) 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, 11355 + ... + 11452.

It is an arithmetic number, because the mean of its divisors is an integer number (216676).

2^1117543 is an apocalyptic number.

1117543 is a deficient number, since it is larger than the sum of its proper divisors (182513).

1117543 is an equidigital number, since it uses as much as digits as its factorization.

1117543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22821 (or 22814 counting only the distinct ones).

The product of its digits is 420, while the sum is 22.

The square root of 1117543 is about 1057.1390636998. The cubic root of 1117543 is about 103.7738862117.

The spelling of 1117543 in words is "one million, one hundred seventeen thousand, five hundred forty-three".