215530271 has 8 divisors (see below), whose sum is σ = 235893504. Its totient is φ = 195295320.

The previous prime is 215530261. The next prime is 215530283. The reversal of 215530271 is 172035512.

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

It is not a de Polignac number, because 215530271 - 2²² = 211335967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215530271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215530261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28535 + ... + 35288.

It is an arithmetic number, because the mean of its divisors is an integer number (29486688).

Almost surely, 2^215530271 is an apocalyptic number.

215530271 is a deficient number, since it is larger than the sum of its proper divisors (20363233).

215530271 is a wasteful number, since it uses less digits than its factorization.

215530271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64141.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 215530271 is about 14680.9492540503. The cubic root of 215530271 is about 599.5647500796.

Adding to 215530271 its reverse (172035512), we get a palindrome (387565783).

The spelling of 215530271 in words is "two hundred fifteen million, five hundred thirty thousand, two hundred seventy-one".