555505505550 has 36 divisors (see below), whose sum is σ = 1492458126120. Its totient is φ = 148134801360.

The previous prime is 555505505537. The next prime is 555505505551. The reversal of 555505505550 is 55505505555.

It is a super-2 number, since 2×555505505550² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 555505505496 and 555505505505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555505505551) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 617227890 + ... + 617228789.

It is an arithmetic number, because the mean of its divisors is an integer number (41457170170).

Almost surely, 2^555505505550 is an apocalyptic number.

555505505550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

555505505550 is an abundant number, since it is smaller than the sum of its proper divisors (936952620570).

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

555505505550 is a wasteful number, since it uses less digits than its factorization.

555505505550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234456697 (or 1234456689 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

The spelling of 555505505550 in words is "five hundred fifty-five billion, five hundred five million, five hundred five thousand, five hundred fifty".