555654240 has 288 divisors, whose sum is σ = 2085108480. Its totient is φ = 134120448.

The previous prime is 555654193. The next prime is 555654247. The reversal of 555654240 is 42456555.

555654240 is a `hidden beast` number, since 55 + 565 + 4 + 2 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-3 number, since 3×555654240³ (a number of 27 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 555654195 and 555654204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555654247) 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, 628839 + ... + 629721.

It is an arithmetic number, because the mean of its divisors is an integer number (7239960).

Almost surely, 2^555654240 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 555654240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1042554240).

555654240 is an abundant number, since it is smaller than the sum of its proper divisors (1529454240).

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

555654240 is a wasteful number, since it uses less digits than its factorization.

555654240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The square root of 555654240 is about 23572.3193597915. The cubic root of 555654240 is about 822.1193639154.

The spelling of 555654240 in words is "five hundred fifty-five million, six hundred fifty-four thousand, two hundred forty".