71156 has 6 divisors (see below), whose sum is σ = 124530. Its totient is φ = 35576.

The previous prime is 71153. The next prime is 71161. The reversal of 71156 is 65117.

71156 = T₁₅₁ + T₁₅₂ + ... + T₁₅₆.

It can be written as a sum of positive squares in only one way, i.e., 70756 + 400 = 266^2 + 20^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 71156.

It is not an unprimeable number, because it can be changed into a prime (71153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8891 + ... + 8898.

It is an arithmetic number, because the mean of its divisors is an integer number (20755).

2⁷¹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

71156 is a deficient number, since it is larger than the sum of its proper divisors (53374).

71156 is a wasteful number, since it uses less digits than its factorization.

71156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17793 (or 17791 counting only the distinct ones).

The product of its digits is 210, while the sum is 20.

The square root of 71156 is about 266.7508200550. The cubic root of 71156 is about 41.4384824258.

It can be divided in two parts, 711 and 56, that added together give a palindrome (767).

The spelling of 71156 in words is "seventy-one thousand, one hundred fifty-six".