1597226 has 4 divisors (see below), whose sum is σ = 2395842. Its totient is φ = 798612.

The previous prime is 1597187. The next prime is 1597229. The reversal of 1597226 is 6227951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6227951 = 37 ⋅168323.

It can be written as a sum of positive squares in only one way, i.e., 1575025 + 22201 = 1255^2 + 149^2 .

It is a super-2 number, since 2×1597226² = 5102261790152, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 5⁶ + 9⁶ + 7³ + 2¹⁰ + 2²⁰ + 6³ .

It is a junction number, because it is equal to n+sod(n) for n = 1597192 and 1597201.

It is not an unprimeable number, because it can be changed into a prime (1597229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399305 + ... + 399308.

2^1597226 is an apocalyptic number.

1597226 is a deficient number, since it is larger than the sum of its proper divisors (798616).

1597226 is an equidigital number, since it uses as much as digits as its factorization.

1597226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798615.

The product of its digits is 7560, while the sum is 32.

The square root of 1597226 is about 1263.8140686034. The cubic root of 1597226 is about 116.8930768840.

The spelling of 1597226 in words is "one million, five hundred ninety-seven thousand, two hundred twenty-six".