555726420 has 144 divisors (see below), whose sum is σ = 1808876160. Its totient is φ = 143047296.

The previous prime is 555726419. The next prime is 555726427. The reversal of 555726420 is 24627555.

555726420 is a `hidden beast` number, since 5 + 5 + 5 + 7 + 2 + 642 + 0 = 666.

555726420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555726427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138969 + ... + 142911.

It is an arithmetic number, because the mean of its divisors is an integer number (12561640).

Almost surely, 2^555726420 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 555726420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (904438080).

555726420 is an abundant number, since it is smaller than the sum of its proper divisors (1253149740).

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

555726420 is a wasteful number, since it uses less digits than its factorization.

555726420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996 (or 3982 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 555726420 is about 23573.8503431238. The cubic root of 555726420 is about 822.1549603961.

The spelling of 555726420 in words is "five hundred fifty-five million, seven hundred twenty-six thousand, four hundred twenty".