5556021 has 8 divisors (see below), whose sum is σ = 7426944. Its totient is φ = 3694560.

The previous prime is 5556017. The next prime is 5556071. The reversal of 5556021 is 1206555.

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

It is not a de Polignac number, because 5556021 - 2² = 5556017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5555982 and 5556000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5556071) 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, 856 + ... + 3441.

It is an arithmetic number, because the mean of its divisors is an integer number (928368).

Almost surely, 2^5556021 is an apocalyptic number.

It is an amenable number.

5556021 is a deficient number, since it is larger than the sum of its proper divisors (1870923).

5556021 is a wasteful number, since it uses less digits than its factorization.

5556021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4731.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 5556021 is about 2357.1213375641. The cubic root of 5556021 is about 177.1147074776.

The spelling of 5556021 in words is "five million, five hundred fifty-six thousand, twenty-one".