2179213 has 4 divisors (see below), whose sum is σ = 2307420. Its totient is φ = 2051008.

The previous prime is 2179211. The next prime is 2179217. The reversal of 2179213 is 3129712.

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 2036329 + 142884 = 1427^2 + 378^2 .

It is a cyclic number.

It is not a de Polignac number, because 2179213 - 2¹ = 2179211 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179211) 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, 64078 + ... + 64111.

It is an arithmetic number, because the mean of its divisors is an integer number (576855).

2^2179213 is an apocalyptic number.

It is an amenable number.

2179213 is a deficient number, since it is larger than the sum of its proper divisors (128207).

2179213 is a wasteful number, since it uses less digits than its factorization.

2179213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128206.

The product of its digits is 756, while the sum is 25.

The square root of 2179213 is about 1476.2157701366. The cubic root of 2179213 is about 129.6482205425.

The spelling of 2179213 in words is "two million, one hundred seventy-nine thousand, two hundred thirteen".