5556389 has 4 divisors (see below), whose sum is σ = 5634720. Its totient is φ = 5478060.

The previous prime is 5556373. The next prime is 5556391. The reversal of 5556389 is 9836555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5556389 - 2⁴ = 5556373 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 (5556319) 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, 39059 + ... + 39200.

It is an arithmetic number, because the mean of its divisors is an integer number (1408680).

Almost surely, 2^5556389 is an apocalyptic number.

It is an amenable number.

5556389 is a deficient number, since it is larger than the sum of its proper divisors (78331).

5556389 is an equidigital number, since it uses as much as digits as its factorization.

5556389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78330.

The product of its digits is 162000, while the sum is 41.

The square root of 5556389 is about 2357.1993975903. The cubic root of 5556389 is about 177.1186177564.

The spelling of 5556389 in words is "five million, five hundred fifty-six thousand, three hundred eighty-nine".