90454565 has 8 divisors (see below), whose sum is σ = 108710808. Its totient is φ = 72253440.

The previous prime is 90454547. The next prime is 90454571. The reversal of 90454565 is 56545409.

It can be written as a sum of positive squares in 4 ways, for example, as 12432676 + 78021889 = 3526^2 + 8833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-90454565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10076 + ... + 16805.

It is an arithmetic number, because the mean of its divisors is an integer number (13588851).

Almost surely, 2^90454565 is an apocalyptic number.

It is an amenable number.

90454565 is a deficient number, since it is larger than the sum of its proper divisors (18256243).

90454565 is a wasteful number, since it uses less digits than its factorization.

90454565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27559.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 90454565 is about 9510.7604848403. The cubic root of 90454565 is about 448.8936856735.

It can be divided in two parts, 90454 and 565, that added together give a palindrome (91019).

The spelling of 90454565 in words is "ninety million, four hundred fifty-four thousand, five hundred sixty-five".