90555793 has 16 divisors (see below), whose sum is σ = 94982400. Its totient is φ = 86270976.

The previous prime is 90555769. The next prime is 90555797. The reversal of 90555793 is 39755509.

It is a cyclic number.

It is not a de Polignac number, because 90555793 - 2¹³ = 90547601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90555797) 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 15 ways as a sum of consecutive naturals, for example, 469105 + ... + 469297.

It is an arithmetic number, because the mean of its divisors is an integer number (5936400).

Almost surely, 2^90555793 is an apocalyptic number.

It is an amenable number.

90555793 is a deficient number, since it is larger than the sum of its proper divisors (4426607).

90555793 is a wasteful number, since it uses less digits than its factorization.

90555793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456.

The product of its (nonzero) digits is 212625, while the sum is 43.

The square root of 90555793 is about 9516.0807583795. The cubic root of 90555793 is about 449.0610760447.

The spelling of 90555793 in words is "ninety million, five hundred fifty-five thousand, seven hundred ninety-three".