5556057021 has 12 divisors (see below), whose sum is σ = 8029715772. Its totient is φ = 3702053376.

The previous prime is 5556056993. The next prime is 5556057049. The reversal of 5556057021 is 1207506555.

It is a happy number.

5556057021 is a `hidden beast` number, since 5 + 5 + 5 + 60 + 570 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (5556056993) and next prime (5556057049).

It can be written as a sum of positive squares in 2 ways, for example, as 2871780921 + 2684276100 = 53589^2 + 51810^2 .

It is not a de Polignac number, because 5556057021 - 2²² = 5551862717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5556057071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147556 + ... + 181341.

It is an arithmetic number, because the mean of its divisors is an integer number (669142981).

Almost surely, 2^5556057021 is an apocalyptic number.

It is an amenable number.

5556057021 is a deficient number, since it is larger than the sum of its proper divisors (2473658751).

5556057021 is a wasteful number, since it uses less digits than its factorization.

5556057021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330780 (or 330777 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The square root of 5556057021 is about 74538.9631065525. The cubic root of 5556057021 is about 1771.1509023563.

The spelling of 5556057021 in words is "five billion, five hundred fifty-six million, fifty-seven thousand, twenty-one".