61156 has 6 divisors (see below), whose sum is σ = 107030. Its totient is φ = 30576.

The previous prime is 61153. The next prime is 61169. The reversal of 61156 is 65116.

61156 is nontrivially palindromic in base 3.

61156 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 54756 + 6400 = 234^2 + 80^2 .

It is an Ulam number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (61151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7641 + ... + 7648.

2⁶¹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

61156 is a deficient number, since it is larger than the sum of its proper divisors (45874).

61156 is a wasteful number, since it uses less digits than its factorization.

61156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15293 (or 15291 counting only the distinct ones).

The product of its digits is 180, while the sum is 19.

The square root of 61156 is about 247.2973918180. The cubic root of 61156 is about 39.3985002908.

The spelling of 61156 in words is "sixty-one thousand, one hundred fifty-six".