90024145 has 8 divisors (see below), whose sum is σ = 110948904. Its totient is φ = 70072704.

The previous prime is 90024133. The next prime is 90024167. The reversal of 90024145 is 54142009.

It can be written as a sum of positive squares in 4 ways, for example, as 14837904 + 75186241 = 3852^2 + 8671^2 .

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 90024145 - 2¹⁹ = 89499857 is a prime.

It is a Duffinian 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, 243124 + ... + 243493.

It is an arithmetic number, because the mean of its divisors is an integer number (13868613).

Almost surely, 2^90024145 is an apocalyptic number.

It is an amenable number.

90024145 is a deficient number, since it is larger than the sum of its proper divisors (20924759).

90024145 is a wasteful number, since it uses less digits than its factorization.

90024145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486659.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 90024145 is about 9488.1054484022. The cubic root of 90024145 is about 448.1805464494.

The spelling of 90024145 in words is "ninety million, twenty-four thousand, one hundred forty-five".