55550500550 has 24 divisors (see below), whose sum is σ = 104238312696. Its totient is φ = 22023559040.

The previous prime is 55550500543. The next prime is 55550500573. The reversal of 55550500550 is 5500505555.

It is a super-2 number, since 2×55550500550² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55550500550.

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, 4910324 + ... + 4921623.

It is an arithmetic number, because the mean of its divisors is an integer number (4343263029).

Almost surely, 2^55550500550 is an apocalyptic number.

55550500550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55550500550 is a deficient number, since it is larger than the sum of its proper divisors (48687812146).

55550500550 is a wasteful number, since it uses less digits than its factorization.

55550500550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9832072 (or 9832067 counting only the distinct ones).

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

The spelling of 55550500550 in words is "fifty-five billion, five hundred fifty million, five hundred thousand, five hundred fifty".