555242440 has 64 divisors (see below), whose sum is σ = 1326274560. Its totient is φ = 208481280.

The previous prime is 555242419. The next prime is 555242447. The reversal of 555242440 is 44242555.

It is not an unprimeable number, because it can be changed into a prime (555242447) 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 15 ways as a sum of consecutive naturals, for example, 333049 + ... + 334711.

It is an arithmetic number, because the mean of its divisors is an integer number (20723040).

Almost surely, 2^555242440 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 555242440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663137280).

555242440 is an abundant number, since it is smaller than the sum of its proper divisors (771032120).

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

555242440 is a wasteful number, since it uses less digits than its factorization.

555242440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182 (or 2178 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 31.

The square root of 555242440 is about 23563.5829194119. The cubic root of 555242440 is about 821.9162205468.

Adding to 555242440 its reverse (44242555), we get a palindrome (599484995).

The spelling of 555242440 in words is "five hundred fifty-five million, two hundred forty-two thousand, four hundred forty".