11456543 has 16 divisors (see below), whose sum is σ = 13516800. Its totient is φ = 9705528.

The previous prime is 11456539. The next prime is 11456551. The reversal of 11456543 is 34565411.

It is a happy number.

It is not a de Polignac number, because 11456543 - 2² = 11456539 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 (11456513) 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 in 15 ways as a sum of consecutive naturals, for example, 43430 + ... + 43692.

It is an arithmetic number, because the mean of its divisors is an integer number (844800).

Almost surely, 2^11456543 is an apocalyptic number.

11456543 is a deficient number, since it is larger than the sum of its proper divisors (2060257).

11456543 is an equidigital number, since it uses as much as digits as its factorization.

11456543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 397 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 11456543 is about 3384.7515418417. The cubic root of 11456543 is about 225.4331934192.

The spelling of 11456543 in words is "eleven million, four hundred fifty-six thousand, five hundred forty-three".