555428 has 12 divisors (see below), whose sum is σ = 978432. Its totient is φ = 275880.

The previous prime is 555421. The next prime is 555439. The reversal of 555428 is 824555.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 555428.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 555428.

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 3 ways as a sum of consecutive naturals, for example, 401 + ... + 1127.

It is an arithmetic number, because the mean of its divisors is an integer number (81536).

2⁵⁵⁵⁴²⁸ is an apocalyptic number.

It is an amenable number.

555428 is a deficient number, since it is larger than the sum of its proper divisors (423004).

555428 is a wasteful number, since it uses less digits than its factorization.

555428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 920 counting only the distinct ones).

The product of its digits is 8000, while the sum is 29.

The square root of 555428 is about 745.2704207199. The cubic root of 555428 is about 82.2007770817.

It can be divided in two parts, 5 and 55428, that multiplied together give a triangular number (277140 = T₇₄₄).

The spelling of 555428 in words is "five hundred fifty-five thousand, four hundred twenty-eight".