2213951 has 4 divisors (see below), whose sum is σ = 2217600. Its totient is φ = 2210304.

The previous prime is 2213933. The next prime is 2213963. The reversal of 2213951 is 1593122.

2213951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1593122 = 2 ⋅796561.

It is a cyclic number.

It is not a de Polignac number, because 2213951 - 2¹⁴ = 2197567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671 + ... + 2208.

It is an arithmetic number, because the mean of its divisors is an integer number (554400).

2^2213951 is an apocalyptic number.

2213951 is a deficient number, since it is larger than the sum of its proper divisors (3649).

2213951 is an equidigital number, since it uses as much as digits as its factorization.

2213951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648.

The product of its digits is 540, while the sum is 23.

The square root of 2213951 is about 1487.9351464362. The cubic root of 2213951 is about 130.3334830502. Note that the first 3 decimals are identical.

The spelling of 2213951 in words is "two million, two hundred thirteen thousand, nine hundred fifty-one".