556145100 has 162 divisors, whose sum is σ = 2027971764. Its totient is φ = 127108800.

The previous prime is 556145077. The next prime is 556145119. The reversal of 556145100 is 1541655.

It is a happy number.

556145100 is a `hidden beast` number, since 556 + 1 + 4 + 5 + 100 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 37795 + ... + 50405.

Almost surely, 2^556145100 is an apocalyptic number.

556145100 is a gapful number since it is divisible by the number (50) 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 556145100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1013985882).

556145100 is an abundant number, since it is smaller than the sum of its proper divisors (1471826664).

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

556145100 is a wasteful number, since it uses less digits than its factorization.

556145100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12645 (or 12628 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 556145100 is about 23582.7288497324. The cubic root of 556145100 is about 822.3613769700.

Adding to 556145100 its reverse (1541655), we get a palindrome (557686755).

The spelling of 556145100 in words is "five hundred fifty-six million, one hundred forty-five thousand, one hundred".