90504145 has 8 divisors (see below), whose sum is σ = 108803304. Its totient is φ = 72271104.

The previous prime is 90504119. The next prime is 90504233. The reversal of 90504145 is 54140509.

It can be written as a sum of positive squares in 4 ways, for example, as 5716881 + 84787264 = 2391^2 + 9208^2 .

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 90504145 - 2⁷ = 90504017 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, 13464 + ... + 19033.

It is an arithmetic number, because the mean of its divisors is an integer number (13600413).

Almost surely, 2^90504145 is an apocalyptic number.

It is an amenable number.

90504145 is a deficient number, since it is larger than the sum of its proper divisors (18299159).

90504145 is a wasteful number, since it uses less digits than its factorization.

90504145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33059.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 90504145 is about 9513.3666490891. The cubic root of 90504145 is about 448.9756866347.

The spelling of 90504145 in words is "ninety million, five hundred four thousand, one hundred forty-five".