90203 has 2 divisors, whose sum is σ = 90204. Its totient is φ = 90202.

The previous prime is 90199. The next prime is 90217. The reversal of 90203 is 30209.

It is a happy number.

It is an a-pointer prime, because the next prime (90217) can be obtained adding 90203 to its sum of digits (14).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90203 - 2² = 90199 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (90263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45101 + 45102.

It is an arithmetic number, because the mean of its divisors is an integer number (45102).

2⁹⁰²⁰³ is an apocalyptic number.

90203 is a deficient number, since it is larger than the sum of its proper divisors (1).

90203 is an equidigital number, since it uses as much as digits as its factorization.

90203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 90203 is about 300.3381427658. The cubic root of 90203 is about 44.8477156893.

The spelling of 90203 in words is "ninety thousand, two hundred three".