55505550550 has 24 divisors (see below), whose sum is σ = 103873715496. Its totient is φ = 22066007040.

The previous prime is 55505550547. The next prime is 55505550601. The reversal of 55505550550 is 5505550555.

It is a super-2 number, since 2×55505550550² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3397099 + ... + 3413398.

It is an arithmetic number, because the mean of its divisors is an integer number (4328071479).

Almost surely, 2^55505550550 is an apocalyptic number.

55505550550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55505550550 is a deficient number, since it is larger than the sum of its proper divisors (48368164946).

55505550550 is a wasteful number, since it uses less digits than its factorization.

55505550550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6810672 (or 6810667 counting only the distinct ones).

The product of its (nonzero) digits is 390625, while the sum is 40.

The spelling of 55505550550 in words is "fifty-five billion, five hundred five million, five hundred fifty thousand, five hundred fifty".