53786 has 4 divisors (see below), whose sum is σ = 80682. Its totient is φ = 26892.

The previous prime is 53783. The next prime is 53791. The reversal of 53786 is 68735.

53786 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 32761 + 21025 = 181^2 + 145^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (53783) 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 as a sum of consecutive naturals, namely, 13445 + ... + 13448.

2⁵³⁷⁸⁶ is an apocalyptic number.

53786 is a deficient number, since it is larger than the sum of its proper divisors (26896).

53786 is a wasteful number, since it uses less digits than its factorization.

53786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26895.

The product of its digits is 5040, while the sum is 29.

The square root of 53786 is about 231.9180889883. The cubic root of 53786 is about 37.7476351895.

The spelling of 53786 in words is "fifty-three thousand, seven hundred eighty-six".