2152209 has 8 divisors (see below), whose sum is σ = 2898432. Its totient is φ = 1420400.

The previous prime is 2152201. The next prime is 2152211. The reversal of 2152209 is 9022512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2152209 - 2³ = 2152201 is a prime.

2152209 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2152201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3249 + ... + 3854.

It is an arithmetic number, because the mean of its divisors is an integer number (362304).

2^2152209 is an apocalyptic number.

It is an amenable number.

2152209 is a deficient number, since it is larger than the sum of its proper divisors (746223).

2152209 is a wasteful number, since it uses less digits than its factorization.

2152209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7207.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2152209 is about 1467.0408992254. The cubic root of 2152209 is about 129.1104756398.

The spelling of 2152209 in words is "two million, one hundred fifty-two thousand, two hundred nine".