90503 has 6 divisors (see below), whose sum is σ = 105336. Its totient is φ = 77532.

The previous prime is 90499. The next prime is 90511. The reversal of 90503 is 30509.

It is not a de Polignac number, because 90503 - 2² = 90499 is a prime.

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

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 875 + ... + 972.

It is an arithmetic number, because the mean of its divisors is an integer number (17556).

2⁹⁰⁵⁰³ is an apocalyptic number.

90503 is a deficient number, since it is larger than the sum of its proper divisors (14833).

90503 is a wasteful number, since it uses less digits than its factorization.

90503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861 (or 1854 counting only the distinct ones).

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

The square root of 90503 is about 300.8371652572. The cubic root of 90503 is about 44.8973793243.

The spelling of 90503 in words is "ninety thousand, five hundred three".