550557 has 20 divisors (see below), whose sum is σ = 940896.
Its totient is φ = 314280.
The previous prime is 550553. The next prime is 550577. The reversal of 550557 is 755055.
550557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 550557 - 22 = 550553 is a prime.
It is a super-2 number, since 2×5505572 = 606226020498, which contains 22 as substring.
It is a hoax number, since the sum of its digits (27) 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 (27).
It is a self number, because there is not a number n which added to its sum of digits gives 550557.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 550557.
It is not an unprimeable number, because it can be changed into a prime (550553) by changing a digit.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 82 + ... + 1052.
2550557 is an apocalyptic number.
It is an amenable number.
550557 is a deficient number, since it is larger than the sum of its proper divisors (390339).
550557 is an equidigital number, since it uses as much as digits as its factorization.
550557 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 990 (or 981 counting only the distinct ones).
The product of its (nonzero) digits is 4375, while the sum is 27.
The square root of 550557 is about 741.9952830039.
The cubic root of 550557 is about 81.9597760284.
The spelling of 550557 in words is "five hundred fifty thousand, five hundred fifty-seven".