90543235 has 4 divisors (see below), whose sum is σ = 108651888. Its totient is φ = 72434584.

The previous prime is 90543223. The next prime is 90543317. The reversal of 90543235 is 53234509.

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 90543235 - 2¹⁵ = 90510467 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90543197 and 90543206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9054319 + ... + 9054328.

It is an arithmetic number, because the mean of its divisors is an integer number (27162972).

Almost surely, 2^90543235 is an apocalyptic number.

90543235 is a deficient number, since it is larger than the sum of its proper divisors (18108653).

90543235 is a wasteful number, since it uses less digits than its factorization.

90543235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18108652.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 90543235 is about 9515.4209050362. The cubic root of 90543235 is about 449.0403169469.

The spelling of 90543235 in words is "ninety million, five hundred forty-three thousand, two hundred thirty-five".