90551826 has 48 divisors (see below), whose sum is σ = 208825344. Its totient is φ = 28259712.

The previous prime is 90551819. The next prime is 90551849. The reversal of 90551826 is 62815509.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 67575 + ... + 68901.

It is an arithmetic number, because the mean of its divisors is an integer number (4350528).

Almost surely, 2^90551826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90551826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104412672).

90551826 is an abundant number, since it is smaller than the sum of its proper divisors (118273518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90551826 is a wasteful number, since it uses less digits than its factorization.

90551826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 90551826 is about 9515.8723194461. The cubic root of 90551826 is about 449.0545185725.

The spelling of 90551826 in words is "ninety million, five hundred fifty-one thousand, eight hundred twenty-six".