90534 has 16 divisors (see below), whose sum is σ = 184320. Its totient is φ = 29640.

The previous prime is 90533. The next prime is 90547. The reversal of 90534 is 43509.

It is a self number, because there is not a number n which added to its sum of digits gives 90534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90533) 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, 379 + ... + 569.

It is an arithmetic number, because the mean of its divisors is an integer number (11520).

2⁹⁰⁵³⁴ is an apocalyptic number.

90534 is an abundant number, since it is smaller than the sum of its proper divisors (93786).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92160).

90534 is a wasteful number, since it uses less digits than its factorization.

90534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 90534 is about 300.8886837354. Note that the first 3 decimals coincide. The cubic root of 90534 is about 44.9025049735.

It can be divided in two parts, 905 and 34, that added together give a palindrome (939).

The spelling of 90534 in words is "ninety thousand, five hundred thirty-four".