5556534021 has 18 divisors (see below), whose sum is σ = 8470769190. Its totient is φ = 3509387856.

The previous prime is 5556534007. The next prime is 5556534119. The reversal of 5556534021 is 1204356555.

5556534021 is a `hidden beast` number, since 55 + 56 + 534 + 0 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4500933921 + 1055600100 = 67089^2 + 32490^2 .

It is not a de Polignac number, because 5556534021 - 2⁵ = 5556533989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5556534421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 851866 + ... + 858363.

Almost surely, 2^5556534021 is an apocalyptic number.

It is an amenable number.

5556534021 is a deficient number, since it is larger than the sum of its proper divisors (2914235169).

5556534021 is a wasteful number, since it uses less digits than its factorization.

5556534021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710273 (or 1710251 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 5556534021 is about 74542.1627067527. The cubic root of 5556534021 is about 1771.2015866696.

The spelling of 5556534021 in words is "five billion, five hundred fifty-six million, five hundred thirty-four thousand, twenty-one".