9861522 has 16 divisors (see below), whose sum is σ = 21516192. Its totient is φ = 2988320.

The previous prime is 9861487. The next prime is 9861559. The reversal of 9861522 is 2251689.

9861522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 74643 + ... + 74774.

It is an arithmetic number, because the mean of its divisors is an integer number (1344762).

Almost surely, 2^9861522 is an apocalyptic number.

9861522 is an abundant number, since it is smaller than the sum of its proper divisors (11654670).

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

9861522 is a wasteful number, since it uses less digits than its factorization.

9861522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149433.

The product of its digits is 8640, while the sum is 33.

The square root of 9861522 is about 3140.3060360417. The cubic root of 9861522 is about 214.4443702490. Note that the first 3 decimals are identical.

The spelling of 9861522 in words is "nine million, eight hundred sixty-one thousand, five hundred twenty-two".