215041005 has 24 divisors (see below), whose sum is σ = 373707672. Its totient is φ = 114390144.

The previous prime is 215040997. The next prime is 215041009. The reversal of 215041005 is 500140512.

It can be written as a sum of positive squares in 4 ways, for example, as 799236 + 214241769 = 894^2 + 14637^2 .

It is not a de Polignac number, because 215041005 - 2³ = 215040997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215041009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11847 + ... + 23883.

It is an arithmetic number, because the mean of its divisors is an integer number (15571153).

Almost surely, 2^215041005 is an apocalyptic number.

It is an amenable number.

215041005 is a deficient number, since it is larger than the sum of its proper divisors (158666667).

215041005 is a wasteful number, since it uses less digits than its factorization.

215041005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12445 (or 12442 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 215041005 is about 14664.2764908467. The cubic root of 215041005 is about 599.1107242990.

Adding to 215041005 its reverse (500140512), we get a palindrome (715181517).

The spelling of 215041005 in words is "two hundred fifteen million, forty-one thousand, five".