90143875 has 16 divisors (see below), whose sum is σ = 112773024. Its totient is φ = 71940000.

The previous prime is 90143873. The next prime is 90143887. The reversal of 90143875 is 57834109.

It is not a de Polignac number, because 90143875 - 2¹ = 90143873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90143873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82080 + ... + 83170.

It is an arithmetic number, because the mean of its divisors is an integer number (7048314).

Almost surely, 2^90143875 is an apocalyptic number.

90143875 is a deficient number, since it is larger than the sum of its proper divisors (22629149).

90143875 is a wasteful number, since it uses less digits than its factorization.

90143875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 90143875 is about 9494.4128307126. The cubic root of 90143875 is about 448.3791482995.

The spelling of 90143875 in words is "ninety million, one hundred forty-three thousand, eight hundred seventy-five".