2118522 has 16 divisors (see below), whose sum is σ = 4842432. Its totient is φ = 605280.

The previous prime is 2118517. The next prime is 2118527. The reversal of 2118522 is 2258112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2118517) and next prime (2118527).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2118527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25179 + ... + 25262.

It is an arithmetic number, because the mean of its divisors is an integer number (302652).

2^2118522 is an apocalyptic number.

2118522 is an abundant number, since it is smaller than the sum of its proper divisors (2723910).

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

2118522 is a wasteful number, since it uses less digits than its factorization.

2118522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50453.

The product of its digits is 320, while the sum is 21.

The square root of 2118522 is about 1455.5143420798. The cubic root of 2118522 is about 128.4333052839.

The spelling of 2118522 in words is "two million, one hundred eighteen thousand, five hundred twenty-two".