871572223 has 6 divisors (see below), whose sum is σ = 900595392. Its totient is φ = 843456060.

The previous prime is 871572139. The next prime is 871572239. The reversal of 871572223 is 322275178.

It is a de Polignac number, because none of the positive numbers 2^k-871572223 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 (871572253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 452511 + ... + 454432.

It is an arithmetic number, because the mean of its divisors is an integer number (150099232).

Almost surely, 2^871572223 is an apocalyptic number.

871572223 is a deficient number, since it is larger than the sum of its proper divisors (29023169).

871572223 is an equidigital number, since it uses as much as digits as its factorization.

871572223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907005 (or 906974 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 871572223 is about 29522.4020533560. The cubic root of 871572223 is about 955.2149851790.

The spelling of 871572223 in words is "eight hundred seventy-one million, five hundred seventy-two thousand, two hundred twenty-three".