71215 has 4 divisors (see below), whose sum is σ = 85464. Its totient is φ = 56968.

The previous prime is 71209. The next prime is 71233. The reversal of 71215 is 51217.

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

It is a cyclic number.

It is not a de Polignac number, because 71215 - 2¹⁵ = 38447 is a prime.

It is a Duffinian number.

71215 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7117 + ... + 7126.

It is an arithmetic number, because the mean of its divisors is an integer number (21366).

2⁷¹²¹⁵ is an apocalyptic number.

71215 is a deficient number, since it is larger than the sum of its proper divisors (14249).

71215 is a wasteful number, since it uses less digits than its factorization.

71215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14248.

The product of its digits is 70, while the sum is 16.

The square root of 71215 is about 266.8613872406. The cubic root of 71215 is about 41.4499323623.

It can be divided in two parts, 712 and 15, that added together give a palindrome (727).

The spelling of 71215 in words is "seventy-one thousand, two hundred fifteen".