11156443 has 4 divisors (see below), whose sum is σ = 11313648. Its totient is φ = 10999240.

The previous prime is 11156441. The next prime is 11156461. The reversal of 11156443 is 34465111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34465111 = 157 ⋅219523.

It is a cyclic number.

It is not a de Polignac number, because 11156443 - 2¹ = 11156441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11156441) 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, 78496 + ... + 78637.

It is an arithmetic number, because the mean of its divisors is an integer number (2828412).

Almost surely, 2^11156443 is an apocalyptic number.

11156443 is a deficient number, since it is larger than the sum of its proper divisors (157205).

11156443 is an equidigital number, since it uses as much as digits as its factorization.

11156443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157204.

The product of its digits is 1440, while the sum is 25.

The square root of 11156443 is about 3340.1261952208. The cubic root of 11156443 is about 223.4473715266.

It can be divided in two parts, 1115 and 6443, that multiplied together give a triangular number (7183945 = T₃₇₉₀).

The spelling of 11156443 in words is "eleven million, one hundred fifty-six thousand, four hundred forty-three".