55430 has 16 divisors (see below), whose sum is σ = 104544. Its totient is φ = 21120.

The previous prime is 55411. The next prime is 55439. The reversal of 55430 is 3455.

It is a nialpdrome in base 10 and base 16.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 55399 and 55408.

It is a congruent number.

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

55430 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 7 ways as a sum of consecutive naturals, for example, 110 + ... + 350.

It is an arithmetic number, because the mean of its divisors is an integer number (6534).

2⁵⁵⁴³⁰ is an apocalyptic number.

55430 is a deficient number, since it is larger than the sum of its proper divisors (49114).

55430 is a wasteful number, since it uses less digits than its factorization.

55430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 55430 is about 235.4357661869. The cubic root of 55430 is about 38.1283746901.

Adding to 55430 its reverse (3455), we get a palindrome (58885).

The spelling of 55430 in words is "fifty-five thousand, four hundred thirty".