2175493 has 4 divisors (see below), whose sum is σ = 2250540. Its totient is φ = 2100448.

The previous prime is 2175479. The next prime is 2175497. The reversal of 2175493 is 3945712.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 813604 + 1361889 = 902^2 + 1167^2 .

It is a cyclic number.

It is not a de Polignac number, because 2175493 - 2⁵ = 2175461 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 7² + 5⁷ + 4 + 9² + 3⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2175497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37480 + ... + 37537.

It is an arithmetic number, because the mean of its divisors is an integer number (562635).

2^2175493 is an apocalyptic number.

It is an amenable number.

2175493 is a deficient number, since it is larger than the sum of its proper divisors (75047).

2175493 is an equidigital number, since it uses as much as digits as its factorization.

2175493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75046.

The product of its digits is 7560, while the sum is 31.

The square root of 2175493 is about 1474.9552535586. The cubic root of 2175493 is about 129.5744070342.

The spelling of 2175493 in words is "two million, one hundred seventy-five thousand, four hundred ninety-three".