871415081 has 4 divisors (see below), whose sum is σ = 891680592. Its totient is φ = 851149572.

The previous prime is 871415071. The next prime is 871415101. The reversal of 871415081 is 180514178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 871415081 - 2¹⁰ = 871414057 is a prime.

It is a super-2 number, since 2×871415081² = 1518728486788473122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871415011) 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 3 ways as a sum of consecutive naturals, for example, 10132691 + ... + 10132776.

It is an arithmetic number, because the mean of its divisors is an integer number (222920148).

Almost surely, 2^871415081 is an apocalyptic number.

It is an amenable number.

871415081 is a deficient number, since it is larger than the sum of its proper divisors (20265511).

871415081 is a wasteful number, since it uses less digits than its factorization.

871415081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20265510.

The product of its (nonzero) digits is 8960, while the sum is 35.

The square root of 871415081 is about 29519.7405307025. The cubic root of 871415081 is about 955.1575742109.

The spelling of 871415081 in words is "eight hundred seventy-one million, four hundred fifteen thousand, eighty-one".