557250 has 32 divisors (see below), whose sum is σ = 1392768. Its totient is φ = 148400.

The previous prime is 557201. The next prime is 557261. The reversal of 557250 is 52755.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 557250.

It is an unprimeable number.

557250 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 (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379 + ... + 1121.

It is an arithmetic number, because the mean of its divisors is an integer number (43524).

2⁵⁵⁷²⁵⁰ is an apocalyptic number.

557250 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 557250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696384).

557250 is an abundant number, since it is smaller than the sum of its proper divisors (835518).

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

557250 is a wasteful number, since it uses less digits than its factorization.

557250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 24.

The square root of 557250 is about 746.4917949984. The cubic root of 557250 is about 82.2905615049.

The spelling of 557250 in words is "five hundred fifty-seven thousand, two hundred fifty".