90551133 has 12 divisors (see below), whose sum is σ = 131738880. Its totient is φ = 59932296.

The previous prime is 90551119. The next prime is 90551147. The reversal of 90551133 is 33115509.

It is an interprime number because it is at equal distance from previous prime (90551119) and next prime (90551147).

It is not a de Polignac number, because 90551133 - 2⁴ = 90551117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90551097 and 90551106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90551113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34941 + ... + 37442.

It is an arithmetic number, because the mean of its divisors is an integer number (10978240).

Almost surely, 2^90551133 is an apocalyptic number.

It is an amenable number.

90551133 is a deficient number, since it is larger than the sum of its proper divisors (41187747).

90551133 is a wasteful number, since it uses less digits than its factorization.

90551133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72528 (or 72525 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 27.

The square root of 90551133 is about 9515.8359065297. The cubic root of 90551133 is about 449.0533730201.

The spelling of 90551133 in words is "ninety million, five hundred fifty-one thousand, one hundred thirty-three".