550690 has 16 divisors (see below), whose sum is σ = 1132992. Its totient is φ = 188784.

The previous prime is 550679. The next prime is 550691. The reversal of 550690 is 96055.

It is a happy number.

It is a super-2 number, since 2×550690² = 606518952200, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (550691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3864 + ... + 4003.

It is an arithmetic number, because the mean of its divisors is an integer number (70812).

2⁵⁵⁰⁶⁹⁰ is an apocalyptic number.

550690 is an abundant number, since it is smaller than the sum of its proper divisors (582302).

It is a weird number, because it is abundant, but not a pseudoperfect number.

550690 is a wasteful number, since it uses less digits than its factorization.

550690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7881.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 550690 is about 742.0849008031. The cubic root of 550690 is about 81.9663752679.

The spelling of 550690 in words is "five hundred fifty thousand, six hundred ninety".