11159481 has 4 divisors (see below), whose sum is σ = 14879312. Its totient is φ = 7439652.

The previous prime is 11159431. The next prime is 11159501. The reversal of 11159481 is 18495111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11159481 - 2⁹ = 11158969 is a prime.

It is a super-2 number, since 2×11159481² = 249068032378722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11159431) 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 3 ways as a sum of consecutive naturals, for example, 1859911 + ... + 1859916.

It is an arithmetic number, because the mean of its divisors is an integer number (3719828).

Almost surely, 2^11159481 is an apocalyptic number.

It is an amenable number.

11159481 is a deficient number, since it is larger than the sum of its proper divisors (3719831).

11159481 is an equidigital number, since it uses as much as digits as its factorization.

11159481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3719830.

The product of its digits is 1440, while the sum is 30.

The square root of 11159481 is about 3340.5809375017. The cubic root of 11159481 is about 223.4676519304.

The spelling of 11159481 in words is "eleven million, one hundred fifty-nine thousand, four hundred eighty-one".