2106522 has 24 divisors (see below), whose sum is σ = 4979520. Its totient is φ = 638280.

The previous prime is 2106491. The next prime is 2106523. The reversal of 2106522 is 2256012.

2106522 is a `hidden beast` number, since 2 + 10 + 652 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2106495 and 2106504.

It is not an unprimeable number, because it can be changed into a prime (2106523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5122 + ... + 5517.

It is an arithmetic number, because the mean of its divisors is an integer number (207480).

2^2106522 is an apocalyptic number.

2106522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2106522 is an abundant number, since it is smaller than the sum of its proper divisors (2872998).

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

2106522 is a wasteful number, since it uses less digits than its factorization.

2106522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10658 (or 10655 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2106522 is about 1451.3862339157. The cubic root of 2106522 is about 128.1903499267.

It can be divided in two parts, 2106 and 522, that added together give a triangular number (2628 = T₇₂).

The spelling of 2106522 in words is "two million, one hundred six thousand, five hundred twenty-two".