53656 has 16 divisors (see below), whose sum is σ = 106200. Its totient is φ = 25344.

The previous prime is 53653. The next prime is 53657. The reversal of 53656 is 65635.

53656 = T₃₃ + T₃₄ + ... + T₇₀.

It is a self number, because there is not a number n which added to its sum of digits gives 53656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25 + ... + 328.

2⁵³⁶⁵⁶ is an apocalyptic number.

53656 is the 147-th centered pentagonal number.

It is an amenable number.

53656 is a deficient number, since it is larger than the sum of its proper divisors (52544).

53656 is a wasteful number, since it uses less digits than its factorization.

53656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 374 counting only the distinct ones).

The product of its digits is 2700, while the sum is 25.

The square root of 53656 is about 231.6376480627. The cubic root of 53656 is about 37.7171988217.

The spelling of 53656 in words is "fifty-three thousand, six hundred fifty-six".