5405561 has 8 divisors (see below), whose sum is σ = 6199104. Its totient is φ = 4617360.

The previous prime is 5405539. The next prime is 5405579. The reversal of 5405561 is 1655045.

5405561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5405561 - 2¹⁰ = 5404537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5405561.

It is not an unprimeable number, because it can be changed into a prime (5405591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1151 + ... + 3483.

It is an arithmetic number, because the mean of its divisors is an integer number (774888).

Almost surely, 2^5405561 is an apocalyptic number.

It is an amenable number.

5405561 is a deficient number, since it is larger than the sum of its proper divisors (793543).

5405561 is a wasteful number, since it uses less digits than its factorization.

5405561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 5405561 is about 2324.9862365184. The cubic root of 5405561 is about 175.5012675671.

The spelling of 5405561 in words is "five million, four hundred five thousand, five hundred sixty-one".