2201156 has 6 divisors (see below), whose sum is σ = 3852030. Its totient is φ = 1100576.

The previous prime is 2201149. The next prime is 2201161. The reversal of 2201156 is 6511022.

It can be written as a sum of positive squares in only one way, i.e., 1478656 + 722500 = 1216^2 + 850^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275141 + ... + 275148.

It is an arithmetic number, because the mean of its divisors is an integer number (642005).

2^2201156 is an apocalyptic number.

It is an amenable number.

2201156 is a deficient number, since it is larger than the sum of its proper divisors (1650874).

2201156 is a wasteful number, since it uses less digits than its factorization.

2201156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550293 (or 550291 counting only the distinct ones).

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

The square root of 2201156 is about 1483.6293337623. The cubic root of 2201156 is about 130.0819207526.

Adding to 2201156 its reverse (6511022), we get a palindrome (8712178).

The spelling of 2201156 in words is "two million, two hundred one thousand, one hundred fifty-six".