556026100 has 72 divisors (see below), whose sum is σ = 1384161408. Its totient is φ = 189916800.

The previous prime is 556026061. The next prime is 556026101. The reversal of 556026100 is 1620655.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556026101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203745 + ... + 206455.

It is an arithmetic number, because the mean of its divisors is an integer number (19224464).

Almost surely, 2^556026100 is an apocalyptic number.

556026100 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 556026100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692080704).

556026100 is an abundant number, since it is smaller than the sum of its proper divisors (828135308).

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

556026100 is a wasteful number, since it uses less digits than its factorization.

556026100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025 (or 3018 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 556026100 is about 23580.2056818850. The cubic root of 556026100 is about 822.3027184265.

Adding to 556026100 its reverse (1620655), we get a palindrome (557646755).

The spelling of 556026100 in words is "five hundred fifty-six million, twenty-six thousand, one hundred".