215443241 has 8 divisors (see below), whose sum is σ = 232129800. Its totient is φ = 198772992.

The previous prime is 215443229. The next prime is 215443247. The reversal of 215443241 is 142344512.

It can be written as a sum of positive squares in 4 ways, for example, as 87616 + 215355625 = 296^2 + 14675^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215443241 - 2⁶ = 215443177 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 215443241.

It is not an unprimeable number, because it can be changed into a prime (215443247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50591 + ... + 54683.

It is an arithmetic number, because the mean of its divisors is an integer number (29016225).

Almost surely, 2^215443241 is an apocalyptic number.

It is an amenable number.

215443241 is a deficient number, since it is larger than the sum of its proper divisors (16686559).

215443241 is a wasteful number, since it uses less digits than its factorization.

215443241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8155.

The product of its digits is 3840, while the sum is 26.

The square root of 215443241 is about 14677.9849093804. The cubic root of 215443241 is about 599.4840388414.

Adding to 215443241 its reverse (142344512), we get a palindrome (357787753).

The spelling of 215443241 in words is "two hundred fifteen million, four hundred forty-three thousand, two hundred forty-one".