87210271 has 4 divisors (see below), whose sum is σ = 87231672. Its totient is φ = 87188872.

The previous prime is 87210229. The next prime is 87210287. The reversal of 87210271 is 17201278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17201278 = 2 ⋅8600639.

It is a cyclic number.

It is not a de Polignac number, because 87210271 - 2¹⁹ = 86685983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87210371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2485 + ... + 13438.

It is an arithmetic number, because the mean of its divisors is an integer number (21807918).

Almost surely, 2^87210271 is an apocalyptic number.

87210271 is a deficient number, since it is larger than the sum of its proper divisors (21401).

87210271 is a wasteful number, since it uses less digits than its factorization.

87210271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21400.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 87210271 is about 9338.6439593765. The cubic root of 87210271 is about 443.4614561130.

The spelling of 87210271 in words is "eighty-seven million, two hundred ten thousand, two hundred seventy-one".