2213651 has 8 divisors (see below), whose sum is σ = 2461104. Its totient is φ = 1973920.

The previous prime is 2213647. The next prime is 2213677. The reversal of 2213651 is 1563122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2213651 - 2² = 2213647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2213551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316 + ... + 2481.

It is an arithmetic number, because the mean of its divisors is an integer number (307638).

2^2213651 is an apocalyptic number.

2213651 is a deficient number, since it is larger than the sum of its proper divisors (247453).

2213651 is a wasteful number, since it uses less digits than its factorization.

2213651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861.

The product of its digits is 360, while the sum is 20.

The square root of 2213651 is about 1487.8343321755. The cubic root of 2213651 is about 130.3275958661.

Adding to 2213651 its reverse (1563122), we get a palindrome (3776773).

The spelling of 2213651 in words is "two million, two hundred thirteen thousand, six hundred fifty-one".