556171616 has 192 divisors, whose sum is σ = 1493614080. Its totient is φ = 196853760.

The previous prime is 556171607. The next prime is 556171619. The reversal of 556171616 is 616171655.

It is a self number, because there is not a number n which added to its sum of digits gives 556171616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556171619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3107015 + ... + 3107193.

It is an arithmetic number, because the mean of its divisors is an integer number (7779240).

Almost surely, 2^556171616 is an apocalyptic number.

556171616 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556171616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (746807040).

556171616 is an abundant number, since it is smaller than the sum of its proper divisors (937442464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556171616 is a wasteful number, since it uses less digits than its factorization.

556171616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 309 counting only the distinct ones).

The product of its digits is 37800, while the sum is 38.

The square root of 556171616 is about 23583.2910341199. The cubic root of 556171616 is about 822.3744463336.

It can be divided in two parts, 5561 and 71616, that added together give a palindrome (77177).

The spelling of 556171616 in words is "five hundred fifty-six million, one hundred seventy-one thousand, six hundred sixteen".