2172508 has 24 divisors (see below), whose sum is σ = 4198320. Its totient is φ = 977280.

The previous prime is 2172497. The next prime is 2172539. The reversal of 2172508 is 8052712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1623 + ... + 2641.

It is an arithmetic number, because the mean of its divisors is an integer number (174930).

2^2172508 is an apocalyptic number.

It is an amenable number.

2172508 is a deficient number, since it is larger than the sum of its proper divisors (2025812).

2172508 is a wasteful number, since it uses less digits than its factorization.

2172508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2172508 is about 1473.9430111100. The cubic root of 2172508 is about 129.5151167736.

The spelling of 2172508 in words is "two million, one hundred seventy-two thousand, five hundred eight".