55552505550 has 24 divisors (see below), whose sum is σ = 137770214136. Its totient is φ = 14814001440.

The previous prime is 55552505543. The next prime is 55552505551. The reversal of 55552505550 is 5550525555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55552505551) 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, 185174869 + ... + 185175168.

It is an arithmetic number, because the mean of its divisors is an integer number (5740425589).

Almost surely, 2^55552505550 is an apocalyptic number.

55552505550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55552505550 is an abundant number, since it is smaller than the sum of its proper divisors (82217708586).

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

55552505550 is a wasteful number, since it uses less digits than its factorization.

55552505550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370350052 (or 370350047 counting only the distinct ones).

The product of its (nonzero) digits is 781250, while the sum is 42.

The spelling of 55552505550 in words is "fifty-five billion, five hundred fifty-two million, five hundred five thousand, five hundred fifty".