2218051 has 12 divisors (see below), whose sum is σ = 2547216. Its totient is φ = 1926320.

The previous prime is 2218037. The next prime is 2218057. The reversal of 2218051 is 1508122.

2218051 = T₄₃₈ + T₄₃₉ + ... + T₄₅₉.

It is not a de Polignac number, because 2218051 - 2⁹ = 2217539 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2218057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2385 + ... + 3181.

It is an arithmetic number, because the mean of its divisors is an integer number (212268).

2^2218051 is an apocalyptic number.

2218051 is a deficient number, since it is larger than the sum of its proper divisors (329165).

2218051 is a wasteful number, since it uses less digits than its factorization.

2218051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2218051 is about 1489.3122573859. The cubic root of 2218051 is about 130.4138879847.

The spelling of 2218051 in words is "two million, two hundred eighteen thousand, fifty-one".