90503129 has 2 divisors, whose sum is σ = 90503130. Its totient is φ = 90503128.

The previous prime is 90503123. The next prime is 90503173. The reversal of 90503129 is 92130509.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78357904 + 12145225 = 8852^2 + 3485^2 .

It is a cyclic number.

It is not a de Polignac number, because 90503129 - 2²⁰ = 89454553 is a prime.

It is not a weakly prime, because it can be changed into another prime (90503123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45251564 + 45251565.

It is an arithmetic number, because the mean of its divisors is an integer number (45251565).

Almost surely, 2^90503129 is an apocalyptic number.

It is an amenable number.

90503129 is a deficient number, since it is larger than the sum of its proper divisors (1).

90503129 is an equidigital number, since it uses as much as digits as its factorization.

90503129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 90503129 is about 9513.3132503876. The cubic root of 90503129 is about 448.9740065607.

The spelling of 90503129 in words is "ninety million, five hundred three thousand, one hundred twenty-nine".