215245205 has 32 divisors (see below), whose sum is σ = 315432960. Its totient is φ = 137712960.

The previous prime is 215245193. The next prime is 215245223. The reversal of 215245205 is 502542512.

It is not a de Polignac number, because 215245205 - 2⁴ = 215245189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42140 + ... + 46970.

It is an arithmetic number, because the mean of its divisors is an integer number (9857280).

Almost surely, 2^215245205 is an apocalyptic number.

It is an amenable number.

215245205 is a deficient number, since it is larger than the sum of its proper divisors (100187755).

215245205 is a wasteful number, since it uses less digits than its factorization.

215245205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 215245205 is about 14671.2373370483. The cubic root of 215245205 is about 599.3003000913.

Adding to 215245205 its reverse (502542512), we get a palindrome (717787717).

The spelling of 215245205 in words is "two hundred fifteen million, two hundred forty-five thousand, two hundred five".