1797245 has 4 divisors (see below), whose sum is σ = 2156700. Its totient is φ = 1437792.

The previous prime is 1797241. The next prime is 1797277. The reversal of 1797245 is 5427971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5427971 = 1307 ⋅4153.

It can be written as a sum of positive squares in 2 ways, for example, as 481636 + 1315609 = 694^2 + 1147^2 .

It is a cyclic number.

It is not a de Polignac number, because 1797245 - 2² = 1797241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1797241) 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, 179720 + ... + 179729.

It is an arithmetic number, because the mean of its divisors is an integer number (539175).

2^1797245 is an apocalyptic number.

It is an amenable number.

1797245 is a deficient number, since it is larger than the sum of its proper divisors (359455).

1797245 is an equidigital number, since it uses as much as digits as its factorization.

1797245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359454.

The product of its digits is 17640, while the sum is 35.

The square root of 1797245 is about 1340.6136654533. The cubic root of 1797245 is about 121.5819472349.

It can be divided in two parts, 179 and 7245, that multiplied together give a triangular number (1296855 = T₁₆₁₀).

The spelling of 1797245 in words is "one million, seven hundred ninety-seven thousand, two hundred forty-five".