1572226 has 8 divisors (see below), whose sum is σ = 2363724. Its totient is φ = 784320.

The previous prime is 1572217. The next prime is 1572239. The reversal of 1572226 is 6222751.

It can be written as a sum of positive squares in 2 ways, for example, as 1565001 + 7225 = 1251^2 + 85^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1572226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006 + ... + 2038.

2^1572226 is an apocalyptic number.

1572226 is a deficient number, since it is larger than the sum of its proper divisors (791498).

1572226 is a wasteful number, since it uses less digits than its factorization.

1572226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796.

The product of its digits is 1680, while the sum is 25.

The square root of 1572226 is about 1253.8843646844. The cubic root of 1572226 is about 116.2799914910.

Adding to 1572226 its reverse (6222751), we get a palindrome (7794977).

The spelling of 1572226 in words is "one million, five hundred seventy-two thousand, two hundred twenty-six".