1571223 has 4 divisors (see below), whose sum is σ = 2094968. Its totient is φ = 1047480.

The previous prime is 1571221. The next prime is 1571233. The reversal of 1571223 is 3221751.

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

It is not a de Polignac number, because 1571223 - 2¹ = 1571221 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1571223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1571221) 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, 261868 + ... + 261873.

It is an arithmetic number, because the mean of its divisors is an integer number (523742).

2^1571223 is an apocalyptic number.

1571223 is a deficient number, since it is larger than the sum of its proper divisors (523745).

1571223 is an equidigital number, since it uses as much as digits as its factorization.

1571223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523744.

The product of its digits is 420, while the sum is 21.

The square root of 1571223 is about 1253.4843437395. The cubic root of 1571223 is about 116.2552593296.

Adding to 1571223 its reverse (3221751), we get a palindrome (4792974).

The spelling of 1571223 in words is "one million, five hundred seventy-one thousand, two hundred twenty-three".