556312020 has 288 divisors, whose sum is σ = 1867958400. Its totient is φ = 123171840.

The previous prime is 556311989. The next prime is 556312021. The reversal of 556312020 is 20213655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556312021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5103726 + ... + 5103834.

Almost surely, 2^556312020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556312020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (933979200).

556312020 is an abundant number, since it is smaller than the sum of its proper divisors (1311646380).

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

556312020 is a wasteful number, since it uses less digits than its factorization.

556312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 556312020 is about 23586.2676148644. The cubic root of 556312020 is about 822.4436425695.

Adding to 556312020 its reverse (20213655), we get a palindrome (576525675).

The spelling of 556312020 in words is "five hundred fifty-six million, three hundred twelve thousand, twenty".