90022557 has 8 divisors (see below), whose sum is σ = 120377376. Its totient is φ = 59841392.

The previous prime is 90022523. The next prime is 90022573. The reversal of 90022557 is 75522009.

It is a happy number.

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 90022557 - 2⁸ = 90022301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90022577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42198 + ... + 44279.

It is an arithmetic number, because the mean of its divisors is an integer number (15047172).

Almost surely, 2^90022557 is an apocalyptic number.

It is an amenable number.

90022557 is a deficient number, since it is larger than the sum of its proper divisors (30354819).

90022557 is a wasteful number, since it uses less digits than its factorization.

90022557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86827.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 90022557 is about 9488.0217643089. The cubic root of 90022557 is about 448.1779111753.

The spelling of 90022557 in words is "ninety million, twenty-two thousand, five hundred fifty-seven".