90522509 has 8 divisors (see below), whose sum is σ = 112859328. Its totient is φ = 70536960.

The previous prime is 90522493. The next prime is 90522521.

90522509 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90522509 - 2⁴ = 90522493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90522529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587732 + ... + 587885.

It is an arithmetic number, because the mean of its divisors is an integer number (14107416).

Almost surely, 2^90522509 is an apocalyptic number.

It is an amenable number.

90522509 is a deficient number, since it is larger than the sum of its proper divisors (22336819).

90522509 is a wasteful number, since it uses less digits than its factorization.

90522509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175635.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 90522509 is about 9514.3317684428. The cubic root of 90522509 is about 449.0060514757.

The spelling of 90522509 in words is "ninety million, five hundred twenty-two thousand, five hundred nine".