1331975 has 6 divisors (see below), whose sum is σ = 1651680. Its totient is φ = 1065560.

The previous prime is 1331969. The next prime is 1331987. The reversal of 1331975 is 5791331.

It is not a de Polignac number, because 1331975 - 2⁴ = 1331959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26615 + ... + 26664.

It is an arithmetic number, because the mean of its divisors is an integer number (275280).

2^1331975 is an apocalyptic number.

1331975 is a deficient number, since it is larger than the sum of its proper divisors (319705).

1331975 is an equidigital number, since it uses as much as digits as its factorization.

1331975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53289 (or 53284 counting only the distinct ones).

The product of its digits is 2835, while the sum is 29.

The square root of 1331975 is about 1154.1122129152. The cubic root of 1331975 is about 110.0268529483.

The spelling of 1331975 in words is "one million, three hundred thirty-one thousand, nine hundred seventy-five".