215241 has 8 divisors (see below), whose sum is σ = 309120. Its totient is φ = 132432.

The previous prime is 215239. The next prime is 215249. The reversal of 215241 is 142512.

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

It is not a de Polignac number, because 215241 - 2¹ = 215239 is a prime.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 215241.

It is not an unprimeable number, because it can be changed into a prime (215249) 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, 2721 + ... + 2798.

It is an arithmetic number, because the mean of its divisors is an integer number (38640).

2²¹⁵²⁴¹ is an apocalyptic number.

It is an amenable number.

215241 is a deficient number, since it is larger than the sum of its proper divisors (93879).

215241 is a wasteful number, since it uses less digits than its factorization.

215241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535.

The product of its digits is 80, while the sum is 15.

The square root of 215241 is about 463.9407289730. The cubic root of 215241 is about 59.9296397450.

Adding to 215241 its reverse (142512), we get a palindrome (357753).

It can be divided in two parts, 215 and 241, that multiplied together give a palindrome (51815).

The spelling of 215241 in words is "two hundred fifteen thousand, two hundred forty-one".