7156 has 6 divisors (see below), whose sum is σ = 12530. Its totient is φ = 3576.

The previous prime is 7151. The next prime is 7159. The reversal of 7156 is 6517.

It can be written as a sum of positive squares in only one way, i.e., 7056 + 100 = 84^2 + 10^2 .

It is an Ulam number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 891 + ... + 898.

7156 is the 54-th centered pentagonal number.

It is an amenable number.

7156 is a deficient number, since it is larger than the sum of its proper divisors (5374).

7156 is a wasteful number, since it uses less digits than its factorization.

7156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793 (or 1791 counting only the distinct ones).

The product of its digits is 210, while the sum is 19.

The square root of 7156 is about 84.5931439302. The cubic root of 7156 is about 19.2703725399.

The spelling of 7156 in words is "seven thousand, one hundred fifty-six".