9145520 has 20 divisors (see below), whose sum is σ = 21263520. Its totient is φ = 3658176.

The previous prime is 9145519. The next prime is 9145561. The reversal of 9145520 is 255419.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9145520.

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, 57080 + ... + 57239.

It is an arithmetic number, because the mean of its divisors is an integer number (1063176).

Almost surely, 2^9145520 is an apocalyptic number.

It is an amenable number.

9145520 is an abundant number, since it is smaller than the sum of its proper divisors (12118000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9145520 is a wasteful number, since it uses less digits than its factorization.

9145520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114332 (or 114326 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 9145520 is about 3024.1560806281. The cubic root of 9145520 is about 209.1234818934.

The spelling of 9145520 in words is "nine million, one hundred forty-five thousand, five hundred twenty".