2201651 has 12 divisors (see below), whose sum is σ = 2383200. Its totient is φ = 2031120.

The previous prime is 2201627. The next prime is 2201669. The reversal of 2201651 is 1561022.

It is a de Polignac number, because none of the positive numbers 2^k-2201651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2201671) 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, 27830 + ... + 27908.

It is an arithmetic number, because the mean of its divisors is an integer number (198600).

2^2201651 is an apocalyptic number.

2201651 is a deficient number, since it is larger than the sum of its proper divisors (181549).

2201651 is an equidigital number, since it uses as much as digits as its factorization.

2201651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 2201651 is about 1483.7961450280. The cubic root of 2201651 is about 130.0916710421.

Adding to 2201651 its reverse (1561022), we get a palindrome (3762673).

The spelling of 2201651 in words is "two million, two hundred one thousand, six hundred fifty-one".