2173249 has 4 divisors (see below), whose sum is σ = 2340436. Its totient is φ = 2006064.

The previous prime is 2173243. The next prime is 2173307. The reversal of 2173249 is 9423712.

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 193600 + 1979649 = 440^2 + 1407^2 .

It is a cyclic number.

It is not a de Polignac number, because 2173249 - 2¹³ = 2165057 is a prime.

It is a super-2 number, since 2×2173249² = 9446022432002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2173243) 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, 83574 + ... + 83599.

It is an arithmetic number, because the mean of its divisors is an integer number (585109).

2^2173249 is an apocalyptic number.

It is an amenable number.

2173249 is a deficient number, since it is larger than the sum of its proper divisors (167187).

2173249 is a wasteful number, since it uses less digits than its factorization.

2173249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167186.

The product of its digits is 3024, while the sum is 28.

The square root of 2173249 is about 1474.1943562502. The cubic root of 2173249 is about 129.5298401244.

The spelling of 2173249 in words is "two million, one hundred seventy-three thousand, two hundred forty-nine".