55550500555550 has 96 divisors (see below), whose sum is σ = 138728634799104. Its totient is φ = 15982561584000.

The previous prime is 55550500555541. The next prime is 55550500555553. The reversal of 55550500555550 is 5555500505555.

It is a super-2 number, since 2×55550500555550² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55550500555553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 554900006 + ... + 555000105.

It is an arithmetic number, because the mean of its divisors is an integer number (1445089945824).

Almost surely, 2^{55550500555550} is an apocalyptic number.

55550500555550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55550500555550 is an abundant number, since it is smaller than the sum of its proper divisors (83178134243554).

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

55550500555550 is a wasteful number, since it uses less digits than its factorization.

55550500555550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109900154 (or 1109900149 counting only the distinct ones).

The product of its (nonzero) digits is 9765625, while the sum is 50.

The spelling of 55550500555550 in words is "fifty-five trillion, five hundred fifty billion, five hundred million, five hundred fifty-five thousand, five hundred fifty".