555147440 has 80 divisors (see below), whose sum is σ = 1322433216. Its totient is φ = 216652800.

The previous prime is 555147433. The next prime is 555147469. The reversal of 555147440 is 44741555.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 555147440.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1318430 + ... + 1318850.

Almost surely, 2^555147440 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 555147440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661216608).

555147440 is an abundant number, since it is smaller than the sum of its proper divisors (767285776).

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

555147440 is a wasteful number, since it uses less digits than its factorization.

555147440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 35.

The square root of 555147440 is about 23561.5670107062. The cubic root of 555147440 is about 821.8693422290.

Adding to 555147440 its reverse (44741555), we get a palindrome (599888995).

The spelling of 555147440 in words is "five hundred fifty-five million, one hundred forty-seven thousand, four hundred forty".