557850 has 24 divisors (see below), whose sum is σ = 1383840. Its totient is φ = 148720.

The previous prime is 557831. The next prime is 557857. The reversal of 557850 is 58755.

Added to its reverse (58755) it gives a triangular number (616605 = T₁₁₁₀).

It is a happy number.

It is a super-2 number, since 2×557850² = 622393245000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (557857) by changing a digit.

557850 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 (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1710 + ... + 2009.

It is an arithmetic number, because the mean of its divisors is an integer number (57660).

2⁵⁵⁷⁸⁵⁰ is an apocalyptic number.

557850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

557850 is an abundant number, since it is smaller than the sum of its proper divisors (825990).

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

557850 is a wasteful number, since it uses less digits than its factorization.

557850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734 (or 3729 counting only the distinct ones).

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

The square root of 557850 is about 746.8935667148. The cubic root of 557850 is about 82.3200854329.

Adding to 557850 its reverse (58755), we get a triangular number (616605 = T₁₁₁₀).

The spelling of 557850 in words is "five hundred fifty-seven thousand, eight hundred fifty".