523090 has 24 divisors (see below), whose sum is σ = 1005732. Its totient is φ = 195840.

The previous prime is 523049. The next prime is 523093. The reversal of 523090 is 90325.

It can be written as a sum of positive squares in 6 ways, for example, as 201601 + 321489 = 449^2 + 567^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (523093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2800 + ... + 2980.

2⁵²³⁰⁹⁰ is an apocalyptic number.

523090 is the 362-nd decagonal number.

523090 is a deficient number, since it is larger than the sum of its proper divisors (482642).

523090 is a wasteful number, since it uses less digits than its factorization.

523090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 523090 is about 723.2496111302. The cubic root of 523090 is about 80.5734833045.

The spelling of 523090 in words is "five hundred twenty-three thousand, ninety".