90332285 has 4 divisors (see below), whose sum is σ = 108398748. Its totient is φ = 72265824.

The previous prime is 90332267. The next prime is 90332287. The reversal of 90332285 is 58223309.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28536964 + 61795321 = 5342^2 + 7861^2 .

It is a cyclic number.

It is not a de Polignac number, because 90332285 - 2¹⁶ = 90266749 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 (90332287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9033224 + ... + 9033233.

It is an arithmetic number, because the mean of its divisors is an integer number (27099687).

Almost surely, 2^90332285 is an apocalyptic number.

It is an amenable number.

90332285 is a deficient number, since it is larger than the sum of its proper divisors (18066463).

90332285 is a wasteful number, since it uses less digits than its factorization.

90332285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18066462.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 90332285 is about 9504.3298027794. The cubic root of 90332285 is about 448.6913171402.

The spelling of 90332285 in words is "ninety million, three hundred thirty-two thousand, two hundred eighty-five".