2154213 has 6 divisors (see below), whose sum is σ = 3111654. Its totient is φ = 1436136.

The previous prime is 2154209. The next prime is 2154227. The reversal of 2154213 is 3124512.

It can be written as a sum of positive squares in only one way, i.e., 1954404 + 199809 = 1398^2 + 447^2 .

It is not a de Polignac number, because 2154213 - 2² = 2154209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154293) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119670 + ... + 119687.

It is an arithmetic number, because the mean of its divisors is an integer number (518609).

2^2154213 is an apocalyptic number.

It is an amenable number.

2154213 is a deficient number, since it is larger than the sum of its proper divisors (957441).

2154213 is a wasteful number, since it uses less digits than its factorization.

2154213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239363 (or 239360 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 2154213 is about 1467.7237478490. The cubic root of 2154213 is about 129.1505363601.

Adding to 2154213 its reverse (3124512), we get a palindrome (5278725).

Subtracting 2154213 from its reverse (3124512), we obtain a cube (970299 = 99³).

The spelling of 2154213 in words is "two million, one hundred fifty-four thousand, two hundred thirteen".