5661522 has 32 divisors (see below), whose sum is σ = 12801600. Its totient is φ = 1854144.

The previous prime is 5661521. The next prime is 5661529. The reversal of 5661522 is 2251665.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (5661521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2298 + ... + 4074.

It is an arithmetic number, because the mean of its divisors is an integer number (400050).

Almost surely, 2^5661522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5661522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6400800).

5661522 is an abundant number, since it is smaller than the sum of its proper divisors (7140078).

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

5661522 is a wasteful number, since it uses less digits than its factorization.

5661522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847 (or 1841 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 5661522 is about 2379.3953013318. The cubic root of 5661522 is about 178.2287384639.

The spelling of 5661522 in words is "five million, six hundred sixty-one thousand, five hundred twenty-two".