90055883 has 4 divisors (see below), whose sum is σ = 90194448. Its totient is φ = 89917320.

The previous prime is 90055871. The next prime is 90055921. The reversal of 90055883 is 38855009.

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

It is a cyclic number.

It is not a de Polignac number, because 90055883 - 2¹⁰ = 90054859 is a prime.

It is a super-2 number, since 2×90055883² = 16220124125819378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90051883) 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, 68303 + ... + 69608.

It is an arithmetic number, because the mean of its divisors is an integer number (22548612).

Almost surely, 2^90055883 is an apocalyptic number.

90055883 is a deficient number, since it is larger than the sum of its proper divisors (138565).

90055883 is a wasteful number, since it uses less digits than its factorization.

90055883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138564.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 90055883 is about 9489.7778161557. Note that the first 3 decimals coincide. The cubic root of 90055883 is about 448.2332089246.

The spelling of 90055883 in words is "ninety million, fifty-five thousand, eight hundred eighty-three".