55434 has 8 divisors (see below), whose sum is σ = 110880. Its totient is φ = 18476.

The previous prime is 55411. The next prime is 55439. The reversal of 55434 is 43455.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

55434 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 55434.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55439) by changing a digit.

55434 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 4614 + ... + 4625.

It is an arithmetic number, because the mean of its divisors is an integer number (13860).

2⁵⁵⁴³⁴ is an apocalyptic number.

55434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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 (55440).

55434 is a wasteful number, since it uses less digits than its factorization.

55434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9244.

The product of its digits is 1200, while the sum is 21.

The square root of 55434 is about 235.4442609196. Note that the first 3 decimals coincide. The cubic root of 55434 is about 38.1292918218.

Adding to 55434 its sum of digits (21), we get a palindrome (55455).

Adding to 55434 its reverse (43455), we get a palindrome (98889).

The spelling of 55434 in words is "fifty-five thousand, four hundred thirty-four".