90530 has 16 divisors (see below), whose sum is σ = 177984. Its totient is φ = 32880.

The previous prime is 90529. The next prime is 90533. The reversal of 90530 is 3509.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 90499 and 90508.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 90530.

It is not an unprimeable number, because it can be changed into a prime (90533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302 + ... + 521.

It is an arithmetic number, because the mean of its divisors is an integer number (11124).

2⁹⁰⁵³⁰ is an apocalyptic number.

90530 is a deficient number, since it is larger than the sum of its proper divisors (87454).

90530 is a wasteful number, since it uses less digits than its factorization.

90530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841.

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 90530 is about 300.8820366855. The cubic root of 90530 is about 44.9018436651.

The spelling of 90530 in words is "ninety thousand, five hundred thirty".