1797145 has 8 divisors (see below), whose sum is σ = 2464704. Its totient is φ = 1232304.

The previous prime is 1797109. The next prime is 1797161. The reversal of 1797145 is 5417971.

1797145 = 186² + 187² + ... + 227².

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

It is a cyclic number.

It is not a de Polignac number, because 1797145 - 2⁷ = 1797017 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1797145.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 25639 + ... + 25708.

It is an arithmetic number, because the mean of its divisors is an integer number (308088).

2^1797145 is an apocalyptic number.

It is an amenable number.

1797145 is a deficient number, since it is larger than the sum of its proper divisors (667559).

1797145 is an equidigital number, since it uses as much as digits as its factorization.

1797145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51359.

The product of its digits is 8820, while the sum is 34.

The square root of 1797145 is about 1340.5763685818. The cubic root of 1797145 is about 121.5796922242.

The spelling of 1797145 in words is "one million, seven hundred ninety-seven thousand, one hundred forty-five".