90990503 has 2 divisors, whose sum is σ = 90990504. Its totient is φ = 90990502.

The previous prime is 90990479. The next prime is 90990517. The reversal of 90990503 is 30509909.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90990503 - 2⁸ = 90990247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90990583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45495251 + 45495252.

It is an arithmetic number, because the mean of its divisors is an integer number (45495252).

Almost surely, 2^90990503 is an apocalyptic number.

90990503 is a deficient number, since it is larger than the sum of its proper divisors (1).

90990503 is an equidigital number, since it uses as much as digits as its factorization.

90990503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10935, while the sum is 35.

The square root of 90990503 is about 9538.8942231267. The cubic root of 90990503 is about 449.7784967488.

The spelling of 90990503 in words is "ninety million, nine hundred ninety thousand, five hundred three".