2216251 has 4 divisors (see below), whose sum is σ = 2237872. Its totient is φ = 2194632.

The previous prime is 2216237. The next prime is 2216281. The reversal of 2216251 is 1526122.

2216251 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.

It is a cyclic number.

It is not a de Polignac number, because 2216251 - 2²¹ = 119099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216231) 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, 10656 + ... + 10861.

It is an arithmetic number, because the mean of its divisors is an integer number (559468).

2^2216251 is an apocalyptic number.

2216251 is a deficient number, since it is larger than the sum of its proper divisors (21621).

2216251 is a wasteful number, since it uses less digits than its factorization.

2216251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21620.

The product of its digits is 240, while the sum is 19.

The square root of 2216251 is about 1488.7078289577. The cubic root of 2216251 is about 130.3786004692.

The spelling of 2216251 in words is "two million, two hundred sixteen thousand, two hundred fifty-one".