555111040 has 128 divisors (see below), whose sum is σ = 1498176000. Its totient is φ = 194826240.

The previous prime is 555111019. The next prime is 555111077. The reversal of 555111040 is 40111555.

It is a happy number.

555111040 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202801 + ... + 205519.

It is an arithmetic number, because the mean of its divisors is an integer number (11704500).

Almost surely, 2^555111040 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 555111040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749088000).

555111040 is an abundant number, since it is smaller than the sum of its proper divisors (943064960).

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

555111040 is a wasteful number, since it uses less digits than its factorization.

555111040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778 (or 2766 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 555111040 is about 23560.7945536648. The cubic root of 555111040 is about 821.8513790143.

Adding to 555111040 its reverse (40111555), we get a palindrome (595222595).

The spelling of 555111040 in words is "five hundred fifty-five million, one hundred eleven thousand, forty".