551090 has 8 divisors (see below), whose sum is σ = 991980. Its totient is φ = 220432.

The previous prime is 551069. The next prime is 551093. The reversal of 551090 is 90155.

It can be written as a sum of positive squares in 2 ways, for example, as 543169 + 7921 = 737^2 + 89^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (551093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27545 + ... + 27564.

2⁵⁵¹⁰⁹⁰ is an apocalyptic number.

551090 is a deficient number, since it is larger than the sum of its proper divisors (440890).

551090 is a wasteful number, since it uses less digits than its factorization.

551090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55116.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 551090 is about 742.3543628214. The cubic root of 551090 is about 81.9862162039.

The spelling of 551090 in words is "five hundred fifty-one thousand, ninety".