550807 has 4 divisors (see below), whose sum is σ = 559096. Its totient is φ = 542520.

The previous prime is 550801. The next prime is 550811. The reversal of 550807 is 708055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 550807 - 2⁷ = 550679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550801) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4044 + ... + 4177.

It is an arithmetic number, because the mean of its divisors is an integer number (139774).

2⁵⁵⁰⁸⁰⁷ is an apocalyptic number.

550807 is a deficient number, since it is larger than the sum of its proper divisors (8289).

550807 is an equidigital number, since it uses as much as digits as its factorization.

550807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8288.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 550807 is about 742.1637285667. The cubic root of 550807 is about 81.9721797356.

The spelling of 550807 in words is "five hundred fifty thousand, eight hundred seven".