215220005 has 48 divisors (see below), whose sum is σ = 353009664. Its totient is φ = 123822720.

The previous prime is 215219981. The next prime is 215220007. The reversal of 215220005 is 500022512.

It is not a de Polignac number, because 215220005 - 2⁸ = 215219749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215220007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31964 + ... + 38106.

It is an arithmetic number, because the mean of its divisors is an integer number (7354368).

Almost surely, 2^215220005 is an apocalyptic number.

It is an amenable number.

215220005 is a deficient number, since it is larger than the sum of its proper divisors (137789659).

215220005 is a wasteful number, since it uses less digits than its factorization.

215220005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186 (or 6179 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 215220005 is about 14670.3784886417. The cubic root of 215220005 is about 599.2769113288.

Adding to 215220005 its reverse (500022512), we get a palindrome (715242517).

The spelling of 215220005 in words is "two hundred fifteen million, two hundred twenty thousand, five".