555780 has 48 divisors (see below), whose sum is σ = 1592640. Its totient is φ = 144768.

The previous prime is 555767. The next prime is 555823. The reversal of 555780 is 87555.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

555780 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 15 ways as a sum of consecutive naturals, for example, 3462 + ... + 3618.

It is an arithmetic number, because the mean of its divisors is an integer number (33180).

2⁵⁵⁵⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796320).

555780 is an abundant number, since it is smaller than the sum of its proper divisors (1036860).

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

555780 is a wasteful number, since it uses less digits than its factorization.

555780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 30.

The square root of 555780 is about 745.5065392067. The cubic root of 555780 is about 82.2181382058.

The spelling of 555780 in words is "five hundred fifty-five thousand, seven hundred eighty".