49566 has 16 divisors (see below), whose sum is σ = 108288. Its totient is φ = 15000.

The previous prime is 49559. The next prime is 49597. The reversal of 49566 is 66594.

49566 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

49566 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310 + ... + 441.

It is an arithmetic number, because the mean of its divisors is an integer number (6768).

2⁴⁹⁵⁶⁶ is an apocalyptic number.

49566 is an abundant number, since it is smaller than the sum of its proper divisors (58722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54144).

49566 is a wasteful number, since it uses less digits than its factorization.

49566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767.

The product of its digits is 6480, while the sum is 30.

The square root of 49566 is about 222.6342291742. The cubic root of 49566 is about 36.7334137750.

It can be divided in two parts, 495 and 66, that added together give a triangular number (561 = T₃₃).

The spelling of 49566 in words is "forty-nine thousand, five hundred sixty-six".