90555722 has 4 divisors (see below), whose sum is σ = 135833586. Its totient is φ = 45277860.

The previous prime is 90555713. The next prime is 90555727. The reversal of 90555722 is 22755509.

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

It can be written as a sum of positive squares in only one way, i.e., 89321401 + 1234321 = 9451^2 + 1111^2 .

It is not an unprimeable number, because it can be changed into a prime (90555727) 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 as a sum of consecutive naturals, namely, 22638929 + ... + 22638932.

Almost surely, 2^90555722 is an apocalyptic number.

90555722 is a deficient number, since it is larger than the sum of its proper divisors (45277864).

90555722 is a wasteful number, since it uses less digits than its factorization.

90555722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45277863.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 90555722 is about 9516.0770278513. The cubic root of 90555722 is about 449.0609586830.

The spelling of 90555722 in words is "ninety million, five hundred fifty-five thousand, seven hundred twenty-two".