215532214 has 4 divisors (see below), whose sum is σ = 323298324. Its totient is φ = 107766106.

The previous prime is 215532209. The next prime is 215532217. The reversal of 215532214 is 412235512.

215532214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215532217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53883052 + ... + 53883055.

It is an arithmetic number, because the mean of its divisors is an integer number (80824581).

Almost surely, 2^215532214 is an apocalyptic number.

215532214 is a deficient number, since it is larger than the sum of its proper divisors (107766110).

215532214 is a wasteful number, since it uses less digits than its factorization.

215532214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107766109.

The product of its digits is 2400, while the sum is 25.

The square root of 215532214 is about 14681.0154280962. The cubic root of 215532214 is about 599.5665517613.

Adding to 215532214 its reverse (412235512), we get a palindrome (627767726).

The spelling of 215532214 in words is "two hundred fifteen million, five hundred thirty-two thousand, two hundred fourteen".