5561406 has 32 divisors (see below), whose sum is σ = 12448800. Its totient is φ = 1840320.

The previous prime is 5561401. The next prime is 5561419. The reversal of 5561406 is 6041655.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 5561406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561401) 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 15 ways as a sum of consecutive naturals, for example, 9490 + ... + 10058.

It is an arithmetic number, because the mean of its divisors is an integer number (389025).

Almost surely, 2^5561406 is an apocalyptic number.

5561406 is an abundant number, since it is smaller than the sum of its proper divisors (6887394).

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

5561406 is a wasteful number, since it uses less digits than its factorization.

5561406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 755 counting only the distinct ones).

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

The square root of 5561406 is about 2358.2633440733. The cubic root of 5561406 is about 177.1719099690.

Subtracting 5561406 from its reverse (6041655), we obtain a square (480249 = 693²).

The spelling of 5561406 in words is "five million, five hundred sixty-one thousand, four hundred six".