90565853 has 4 divisors (see below), whose sum is σ = 103503840. Its totient is φ = 77627868.

The previous prime is 90565823. The next prime is 90565877. The reversal of 90565853 is 35856509.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90565853 - 2¹⁰ = 90564829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90565853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90565823) 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 3 ways as a sum of consecutive naturals, for example, 6468983 + ... + 6468996.

It is an arithmetic number, because the mean of its divisors is an integer number (25875960).

Almost surely, 2^90565853 is an apocalyptic number.

It is an amenable number.

90565853 is a deficient number, since it is larger than the sum of its proper divisors (12937987).

90565853 is a wasteful number, since it uses less digits than its factorization.

90565853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12937986.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 90565853 is about 9516.6093226527. The cubic root of 90565853 is about 449.0777044201.

The spelling of 90565853 in words is "ninety million, five hundred sixty-five thousand, eight hundred fifty-three".