11582481 has 4 divisors (see below), whose sum is σ = 15443312. Its totient is φ = 7721652.

The previous prime is 11582477. The next prime is 11582489. The reversal of 11582481 is 18428511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18428511 = 3 ⋅6142837.

It is not a de Polignac number, because 11582481 - 2² = 11582477 is a prime.

It is a super-2 number, since 2×11582481² = 268307732230722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11582489) 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, 1930411 + ... + 1930416.

It is an arithmetic number, because the mean of its divisors is an integer number (3860828).

Almost surely, 2^11582481 is an apocalyptic number.

It is an amenable number.

11582481 is a deficient number, since it is larger than the sum of its proper divisors (3860831).

11582481 is an equidigital number, since it uses as much as digits as its factorization.

11582481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860830.

The product of its digits is 2560, while the sum is 30.

The square root of 11582481 is about 3403.3044236448. The cubic root of 11582481 is about 226.2562225734.

The spelling of 11582481 in words is "eleven million, five hundred eighty-two thousand, four hundred eighty-one".