215041 has 4 divisors (see below), whose sum is σ = 216000. Its totient is φ = 214084.

The previous prime is 214993. The next prime is 215051. The reversal of 215041 is 140512.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 215041 - 2⁷ = 214913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60 + ... + 658.

It is an arithmetic number, because the mean of its divisors is an integer number (54000).

215041 is a Friedman number, since it can be written as 210*4^5+1, using all its digits and the basic arithmetic operations.

It is a Proth number, since it is equal to 105 ⋅ 2¹¹ + 1 and 105 < 2¹¹.

2²¹⁵⁰⁴¹ is an apocalyptic number.

It is an amenable number.

215041 is a deficient number, since it is larger than the sum of its proper divisors (959).

215041 is an equidigital number, since it uses as much as digits as its factorization.

215041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 215041 is about 463.7251341042. The cubic root of 215041 is about 59.9110719656.

Adding to 215041 its reverse (140512), we get a palindrome (355553).

Subtracting from 215041 its reverse (140512), we obtain a square (74529 = 273²).

The spelling of 215041 in words is "two hundred fifteen thousand, forty-one".