3915522 has 48 divisors (see below), whose sum is σ = 9467640. Its totient is φ = 1161216.

The previous prime is 3915521. The next prime is 3915533. The reversal of 3915522 is 2255193.

It can be written as a sum of positive squares in 4 ways, for example, as 3721041 + 194481 = 1929^2 + 441^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3915521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6498 + ... + 7074.

Almost surely, 2^3915522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3915522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4733820).

3915522 is an abundant number, since it is smaller than the sum of its proper divisors (5552118).

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

3915522 is a wasteful number, since it uses less digits than its factorization.

3915522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 624 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 3915522 is about 1978.7677984038. The cubic root of 3915522 is about 157.6146406473.

The spelling of 3915522 in words is "three million, nine hundred fifteen thousand, five hundred twenty-two".