18055241 has 4 divisors (see below), whose sum is σ = 19117332. Its totient is φ = 16993152.

The previous prime is 18055217. The next prime is 18055243. The reversal of 18055241 is 14255081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14255081 = 521 ⋅27361.

It can be written as a sum of positive squares in 2 ways, for example, as 9174841 + 8880400 = 3029^2 + 2980^2 .

It is a cyclic number.

It is not a de Polignac number, because 18055241 - 2¹⁴ = 18038857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18055241.

It is not an unprimeable number, because it can be changed into a prime (18055243) 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, 531020 + ... + 531053.

It is an arithmetic number, because the mean of its divisors is an integer number (4779333).

Almost surely, 2^18055241 is an apocalyptic number.

It is an amenable number.

18055241 is a deficient number, since it is larger than the sum of its proper divisors (1062091).

18055241 is a wasteful number, since it uses less digits than its factorization.

18055241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062090.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 18055241 is about 4249.1459141809. The cubic root of 18055241 is about 262.3419626207.

The spelling of 18055241 in words is "eighteen million, fifty-five thousand, two hundred forty-one".