1997275 has 24 divisors (see below), whose sum is σ = 2883744. Its totient is φ = 1344000.

The previous prime is 1997269. The next prime is 1997293. The reversal of 1997275 is 5727991.

It is not a de Polignac number, because 1997275 - 2³ = 1997267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17619 + ... + 17731.

It is an arithmetic number, because the mean of its divisors is an integer number (120156).

2^1997275 is an apocalyptic number.

1997275 is the 707-th decagonal number.

1997275 is a deficient number, since it is larger than the sum of its proper divisors (886469).

1997275 is a wasteful number, since it uses less digits than its factorization.

1997275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 226 counting only the distinct ones).

The product of its digits is 39690, while the sum is 40.

The square root of 1997275 is about 1413.2498009906. The cubic root of 1997275 is about 125.9348575674.

The spelling of 1997275 in words is "one million, nine hundred ninety-seven thousand, two hundred seventy-five".