5523661 has 24 divisors (see below), whose sum is σ = 6912864. Its totient is φ = 4350240.

The previous prime is 5523653. The next prime is 5523689. The reversal of 5523661 is 1663255.

It is not a de Polignac number, because 5523661 - 2³ = 5523653 is a prime.

It is a Duffinian number.

Its product of digits (5400) is a multiple of the sum of its prime divisors (150).

5523661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5523631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51570 + ... + 51676.

It is an arithmetic number, because the mean of its divisors is an integer number (288036).

Almost surely, 2^5523661 is an apocalyptic number.

It is an amenable number.

5523661 is a deficient number, since it is larger than the sum of its proper divisors (1389203).

5523661 is a wasteful number, since it uses less digits than its factorization.

5523661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 150 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 5523661 is about 2350.2470082951. The cubic root of 5523661 is about 176.7701806243.

It can be divided in two parts, 55 and 23661, that added together give a square (23716 = 154²).

The spelling of 5523661 in words is "five million, five hundred twenty-three thousand, six hundred sixty-one".