1997125 has 16 divisors (see below), whose sum is σ = 2686320. Its totient is φ = 1473600.

The previous prime is 1997119. The next prime is 1997129. The reversal of 1997125 is 5217991.

It can be written as a sum of positive squares in 8 ways, for example, as 401956 + 1595169 = 634^2 + 1263^2 .

It is not a de Polignac number, because 1997125 - 2⁹ = 1996613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011 + ... + 2239.

It is an arithmetic number, because the mean of its divisors is an integer number (167895).

2^1997125 is an apocalyptic number.

It is an amenable number.

1997125 is a deficient number, since it is larger than the sum of its proper divisors (689195).

1997125 is a wasteful number, since it uses less digits than its factorization.

1997125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1247 counting only the distinct ones).

The product of its digits is 5670, while the sum is 34.

The square root of 1997125 is about 1413.1967308199. The cubic root of 1997125 is about 125.9317048215.

The spelling of 1997125 in words is "one million, nine hundred ninety-seven thousand, one hundred twenty-five".