2172494 has 4 divisors (see below), whose sum is σ = 3258744. Its totient is φ = 1086246.

The previous prime is 2172491. The next prime is 2172497. The reversal of 2172494 is 4942712.

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

It is an interprime number because it is at equal distance from previous prime (2172491) and next prime (2172497).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543122 + ... + 543125.

It is an arithmetic number, because the mean of its divisors is an integer number (814686).

2^2172494 is an apocalyptic number.

2172494 is a deficient number, since it is larger than the sum of its proper divisors (1086250).

2172494 is a wasteful number, since it uses less digits than its factorization.

2172494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086249.

The product of its digits is 4032, while the sum is 29.

The square root of 2172494 is about 1473.9382619364. The cubic root of 2172494 is about 129.5148385674.

The spelling of 2172494 in words is "two million, one hundred seventy-two thousand, four hundred ninety-four".