5556557 has 2 divisors, whose sum is σ = 5556558. Its totient is φ = 5556556.

The previous prime is 5556539. The next prime is 5556559. The reversal of 5556557 is 7556555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2886601 + 2669956 = 1699^2 + 1634^2 .

It is a cyclic number.

It is not a de Polignac number, because 5556557 - 2¹⁴ = 5540173 is a prime.

Together with 5556559, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 5556557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5556559) 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 as a sum of consecutive naturals, namely, 2778278 + 2778279.

It is an arithmetic number, because the mean of its divisors is an integer number (2778279).

Almost surely, 2^5556557 is an apocalyptic number.

It is an amenable number.

5556557 is a deficient number, since it is larger than the sum of its proper divisors (1).

5556557 is an equidigital number, since it uses as much as digits as its factorization.

5556557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131250, while the sum is 38.

The square root of 5556557 is about 2357.2350328298. The cubic root of 5556557 is about 177.1204028263.

The spelling of 5556557 in words is "five million, five hundred fifty-six thousand, five hundred fifty-seven".