2215251 has 12 divisors (see below), whose sum is σ = 3268512. Its totient is φ = 1445136.

The previous prime is 2215237. The next prime is 2215277. The reversal of 2215251 is 1525122.

2215251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2215251 - 2¹¹ = 2213203 is a prime.

2215251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2215201) 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 11 ways as a sum of consecutive naturals, for example, 2196 + ... + 3041.

It is an arithmetic number, because the mean of its divisors is an integer number (272376).

2^2215251 is an apocalyptic number.

2215251 is a deficient number, since it is larger than the sum of its proper divisors (1053261).

2215251 is a wasteful number, since it uses less digits than its factorization.

2215251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290 (or 5287 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 2215251 is about 1488.3719293241. The cubic root of 2215251 is about 130.3589880374.

The spelling of 2215251 in words is "two million, two hundred fifteen thousand, two hundred fifty-one".