555450 has 72 divisors (see below), whose sum is σ = 1645728. Its totient is φ = 121440.

The previous prime is 555439. The next prime is 555461. The reversal of 555450 is 54555.

It is an interprime number because it is at equal distance from previous prime (555439) and next prime (555461).

It is a self number, because there is not a number n which added to its sum of digits gives 555450.

It is an unprimeable number.

555450 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 (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 24139 + ... + 24161.

2⁵⁵⁵⁴⁵⁰ is an apocalyptic number.

555450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 555450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (822864).

555450 is an abundant number, since it is smaller than the sum of its proper divisors (1090278).

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

555450 is a wasteful number, since it uses less digits than its factorization.

555450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 555450 is about 745.2851803169. The cubic root of 555450 is about 82.2018623669.

It can be divided in two parts, 5 and 55450, that added together give a palindrome (55455).

The spelling of 555450 in words is "five hundred fifty-five thousand, four hundred fifty".