65542 has 4 divisors (see below), whose sum is σ = 98316.
Its totient is φ = 32770.
The previous prime is 65539. The next prime is 65543. The reversal of 65542 is 24556.
It can be divided in two parts, 6554 and 2, that added together give a palindrome (6556).
It is a semiprime because it is the product of two primes.
It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is an Ulam number.
It is a nialpdrome in base 10.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (65543) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (3) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16384 + ... + 16387.
It is an arithmetic number, because the mean of its divisors is an integer number (24579).
65542 is a Friedman number, since it can be written as 6+4^(5+5-2), using all its digits and the basic arithmetic operations.
265542 is an apocalyptic number.
65542 is a deficient number, since it is larger than the sum of its proper divisors (32774).
65542 is a wasteful number, since it uses less digits than its factorization.
65542 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 32773.
The product of its digits is 1200, while the sum is 22.
The square root of 65542 is about 256.0117184818.
The cubic root of 65542 is about 40.3187039507.
The spelling of 65542 in words is "sixty-five thousand, five hundred forty-two".