90850145 has 8 divisors (see below), whose sum is σ = 109345704. Its totient is φ = 72463104.

The previous prime is 90850139. The next prime is 90850163. The reversal of 90850145 is 54105809.

It can be written as a sum of positive squares in 4 ways, for example, as 200704 + 90649441 = 448^2 + 9521^2 .

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 90850145 - 2⁴ = 90850129 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, 25274 + ... + 28643.

It is an arithmetic number, because the mean of its divisors is an integer number (13668213).

Almost surely, 2^90850145 is an apocalyptic number.

It is an amenable number.

90850145 is a deficient number, since it is larger than the sum of its proper divisors (18495559).

90850145 is a wasteful number, since it uses less digits than its factorization.

90850145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54259.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 90850145 is about 9531.5342416633. The cubic root of 90850145 is about 449.5471081366.

The spelling of 90850145 in words is "ninety million, eight hundred fifty thousand, one hundred forty-five".