90544 has 10 divisors (see below), whose sum is σ = 175460. Its totient is φ = 45264.

The previous prime is 90533. The next prime is 90547. The reversal of 90544 is 44509.

90544 is nontrivially palindromic in base 3.

It is not an unprimeable number, because it can be changed into a prime (90547) by changing a digit.

90544 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 (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2814 + ... + 2845.

It is an arithmetic number, because the mean of its divisors is an integer number (17546).

2⁹⁰⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

90544 is a deficient number, since it is larger than the sum of its proper divisors (84916).

90544 is a wasteful number, since it uses less digits than its factorization.

90544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5667 (or 5661 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 90544 is about 300.9053007177. The cubic root of 90544 is about 44.9041581591.

It can be divided in two parts, 905 and 44, that added together give a palindrome (949).

The spelling of 90544 in words is "ninety thousand, five hundred forty-four".