90565243 has 8 divisors (see below), whose sum is σ = 91765440. Its totient is φ = 89369280.

The previous prime is 90565217. The next prime is 90565249. The reversal of 90565243 is 34256509.

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 90565243 - 2²¹ = 88468091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90565199 and 90565208.

It is not an unprimeable number, because it can be changed into a prime (90565249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80521 + ... + 81637.

It is an arithmetic number, because the mean of its divisors is an integer number (11470680).

Almost surely, 2^90565243 is an apocalyptic number.

90565243 is a deficient number, since it is larger than the sum of its proper divisors (1200197).

90565243 is a wasteful number, since it uses less digits than its factorization.

90565243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 90565243 is about 9516.5772733688. The cubic root of 90565243 is about 449.0766961739.

The spelling of 90565243 in words is "ninety million, five hundred sixty-five thousand, two hundred forty-three".