2170975 has 12 divisors (see below), whose sum is σ = 2765944. Its totient is φ = 1689120.

The previous prime is 2170943. The next prime is 2171003. The reversal of 2170975 is 5790712.

It is not a de Polignac number, because 2170975 - 2⁵ = 2170943 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249 + ... + 2098.

2^2170975 is an apocalyptic number.

2170975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2170975 is a deficient number, since it is larger than the sum of its proper divisors (594969).

2170975 is a wasteful number, since it uses less digits than its factorization.

2170975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394 (or 2389 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 2170975 is about 1473.4228856645. The cubic root of 2170975 is about 129.4846460929.

The spelling of 2170975 in words is "two million, one hundred seventy thousand, nine hundred seventy-five".