555420 has 24 divisors (see below), whose sum is σ = 1555344. Its totient is φ = 148096.

The previous prime is 555419. The next prime is 555421. The reversal of 555420 is 24555.

555420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (555419) and next prime (555421).

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 (555421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4569 + ... + 4688.

It is an arithmetic number, because the mean of its divisors is an integer number (64806).

2⁵⁵⁵⁴²⁰ is an apocalyptic number.

It is an amenable number.

555420 is an abundant number, since it is smaller than the sum of its proper divisors (999924).

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

555420 is a wasteful number, since it uses less digits than its factorization.

555420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9269 (or 9267 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 555420 is about 745.2650535212. The cubic root of 555420 is about 82.2003824255.

Adding to 555420 its reverse (24555), we get a palindrome (579975).

The spelling of 555420 in words is "five hundred fifty-five thousand, four hundred twenty".