5555409 has 4 divisors (see below), whose sum is σ = 7407216.
Its totient is φ = 3703604.
The previous prime is 5555401. The next prime is 5555461. The reversal of 5555409 is 9045555.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 5555409 - 23 = 5555401 is a prime.
It is a D-number.
It is a self number, because there is not a number n which added to its sum of digits gives 5555409.
It is not an unprimeable number, because it can be changed into a prime (5555401) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925899 + ... + 925904.
It is an arithmetic number, because the mean of its divisors is an integer number (1851804).
Almost surely, 25555409 is an apocalyptic number.
It is an amenable number.
5555409 is a deficient number, since it is larger than the sum of its proper divisors (1851807).
5555409 is a wasteful number, since it uses less digits than its factorization.
5555409 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1851806.
The product of its (nonzero) digits is 22500, while the sum is 33.
The square root of 5555409 is about 2356.9915146220.
The cubic root of 5555409 is about 177.1082041316.
The spelling of 5555409 in words is "five million, five hundred fifty-five thousand, four hundred nine".