90224165 has 4 divisors (see below), whose sum is σ = 108269004. Its totient is φ = 72179328.

The previous prime is 90224129. The next prime is 90224177. The reversal of 90224165 is 56142209.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59243809 + 30980356 = 7697^2 + 5566^2 .

It is a cyclic number.

It is not a de Polignac number, because 90224165 - 2⁸ = 90223909 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 3 ways as a sum of consecutive naturals, for example, 9022412 + ... + 9022421.

It is an arithmetic number, because the mean of its divisors is an integer number (27067251).

Almost surely, 2^90224165 is an apocalyptic number.

It is an amenable number.

90224165 is a deficient number, since it is larger than the sum of its proper divisors (18044839).

90224165 is a wasteful number, since it uses less digits than its factorization.

90224165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18044838.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 90224165 is about 9498.6401658343. The cubic root of 90224165 is about 448.5122306590.

The spelling of 90224165 in words is "ninety million, two hundred twenty-four thousand, one hundred sixty-five".