1162543 has 2 divisors, whose sum is σ = 1162544. Its totient is φ = 1162542.

The previous prime is 1162541. The next prime is 1162547. The reversal of 1162543 is 3452611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1162543 - 2¹ = 1162541 is a prime.

Together with 1162541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1162541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581271 + 581272.

It is an arithmetic number, because the mean of its divisors is an integer number (581272).

2^1162543 is an apocalyptic number.

1162543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1162543 is an equidigital number, since it uses as much as digits as its factorization.

1162543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 1162543 is about 1078.2128732305. The cubic root of 1162543 is about 105.1484822955.

The spelling of 1162543 in words is "one million, one hundred sixty-two thousand, five hundred forty-three".