5556016521 has 12 divisors (see below), whose sum is σ = 8754935280. Its totient is φ = 3367282680.

The previous prime is 5556016511. The next prime is 5556016547. The reversal of 5556016521 is 1256106555.

It is not a de Polignac number, because 5556016521 - 2⁷ = 5556016393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5556016511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28060591 + ... + 28060788.

It is an arithmetic number, because the mean of its divisors is an integer number (729577940).

Almost surely, 2^5556016521 is an apocalyptic number.

It is an amenable number.

5556016521 is a deficient number, since it is larger than the sum of its proper divisors (3198918759).

5556016521 is a wasteful number, since it uses less digits than its factorization.

5556016521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56121396 (or 56121393 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 5556016521 is about 74538.6914360589. The cubic root of 5556016521 is about 1771.1465988376.

The spelling of 5556016521 in words is "five billion, five hundred fifty-six million, sixteen thousand, five hundred twenty-one".