1056543 has 4 divisors (see below), whose sum is σ = 1408728. Its totient is φ = 704360.

The previous prime is 1056541. The next prime is 1056563. The reversal of 1056543 is 3456501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1056543 - 2¹ = 1056541 is a prime.

It is a super-2 number, since 2×1056543² = 2232566221698, which contains 22 as substring.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176088 + ... + 176093.

It is an arithmetic number, because the mean of its divisors is an integer number (352182).

2^1056543 is an apocalyptic number.

1056543 is a deficient number, since it is larger than the sum of its proper divisors (352185).

1056543 is an equidigital number, since it uses as much as digits as its factorization.

1056543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352184.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1056543 is about 1027.8827754175. The cubic root of 1056543 is about 101.8503187101.

The spelling of 1056543 in words is "one million, fifty-six thousand, five hundred forty-three".