50556 has 24 divisors (see below), whose sum is σ = 129024. Its totient is φ = 15280.

The previous prime is 50551. The next prime is 50581. The reversal of 50556 is 65505.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50551) by changing a digit.

50556 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, 60 + ... + 323.

It is an arithmetic number, because the mean of its divisors is an integer number (5376).

2⁵⁰⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

50556 is an abundant number, since it is smaller than the sum of its proper divisors (78468).

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 (64512).

50556 is a wasteful number, since it uses less digits than its factorization.

50556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 50556 is about 224.8466143841. The cubic root of 50556 is about 36.9763666949.

It can be divided in two parts, 505 and 56, that added together give a triangular number (561 = T₃₃).

The spelling of 50556 in words is "fifty thousand, five hundred fifty-six".