551790 has 24 divisors (see below), whose sum is σ = 1434888. Its totient is φ = 147120.

The previous prime is 551773. The next prime is 551801. The reversal of 551790 is 97155.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

551790 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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2976 + ... + 3155.

It is an arithmetic number, because the mean of its divisors is an integer number (59787).

2⁵⁵¹⁷⁹⁰ is an apocalyptic number.

551790 is an abundant number, since it is smaller than the sum of its proper divisors (883098).

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

551790 is a wasteful number, since it uses less digits than its factorization.

551790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144 (or 6141 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 27.

The square root of 551790 is about 742.8256861472. The cubic root of 551790 is about 82.0209147523.

The spelling of 551790 in words is "five hundred fifty-one thousand, seven hundred ninety".