215652005 has 8 divisors (see below), whose sum is σ = 265094424. Its totient is φ = 168313600.

The previous prime is 215651999. The next prime is 215652013. The reversal of 215652005 is 500256512.

It can be written as a sum of positive squares in 4 ways, for example, as 4879681 + 210772324 = 2209^2 + 14518^2 .

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

It is not a de Polignac number, because 215652005 - 2⁶ = 215651941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525776 + ... + 526185.

It is an arithmetic number, because the mean of its divisors is an integer number (33136803).

Almost surely, 2^215652005 is an apocalyptic number.

It is an amenable number.

215652005 is a deficient number, since it is larger than the sum of its proper divisors (49442419).

215652005 is a wasteful number, since it uses less digits than its factorization.

215652005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052007.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 215652005 is about 14685.0946541042. The cubic root of 215652005 is about 599.6776092121.

The spelling of 215652005 in words is "two hundred fifteen million, six hundred fifty-two thousand, five".