5405565 has 24 divisors (see below), whose sum is σ = 9487584. Its totient is φ = 2606400.

The previous prime is 5405539. The next prime is 5405579. The reversal of 5405565 is 5655045.

It is not a de Polignac number, because 5405565 - 2¹² = 5401469 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29775 + ... + 29955.

It is an arithmetic number, because the mean of its divisors is an integer number (395316).

Almost surely, 2^5405565 is an apocalyptic number.

5405565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5405565 is a deficient number, since it is larger than the sum of its proper divisors (4082019).

5405565 is a wasteful number, since it uses less digits than its factorization.

5405565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 5405565 is about 2324.9870967384. The cubic root of 5405565 is about 175.5013108562.

It can be divided in two parts, 540 and 5565, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 5405565 in words is "five million, four hundred five thousand, five hundred sixty-five".