5555405 has 4 divisors (see below), whose sum is σ = 6666492. Its totient is φ = 4444320.

The previous prime is 5555401. The next prime is 5555461. The reversal of 5555405 is 5045555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 724201 + 4831204 = 851^2 + 2198^2 .

It is not a de Polignac number, because 5555405 - 2² = 5555401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555536 + ... + 555545.

It is an arithmetic number, because the mean of its divisors is an integer number (1666623).

Almost surely, 2^5555405 is an apocalyptic number.

It is an amenable number.

5555405 is a deficient number, since it is larger than the sum of its proper divisors (1111087).

5555405 is a wasteful number, since it uses less digits than its factorization.

5555405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111086.

The product of its (nonzero) digits is 12500, while the sum is 29.

The square root of 5555405 is about 2356.9906660825. The cubic root of 5555405 is about 177.1081616245.

The spelling of 5555405 in words is "five million, five hundred fifty-five thousand, four hundred five".