555005005550 has 24 divisors (see below), whose sum is σ = 1032354482376. Its totient is φ = 221992287840.

The previous prime is 555005005547. The next prime is 555005005553. The reversal of 555005005550 is 55500500555.

It is an interprime number because it is at equal distance from previous prime (555005005547) and next prime (555005005553).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 555005005550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555005005553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 971312 + ... + 1432988.

It is an arithmetic number, because the mean of its divisors is an integer number (43014770099).

Almost surely, 2^555005005550 is an apocalyptic number.

555005005550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

555005005550 is a deficient number, since it is larger than the sum of its proper divisors (477349476826).

555005005550 is a wasteful number, since it uses less digits than its factorization.

555005005550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485732 (or 485727 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 35.

The spelling of 555005005550 in words is "five hundred fifty-five billion, five million, five thousand, five hundred fifty".