55500555055550 has 24 divisors (see below), whose sum is σ = 112615671713832. Its totient is φ = 20182020020000.

The previous prime is 55500555055499. The next prime is 55500555055571. The reversal of 55500555055550 is 5555055500555.

It is a super-2 number, since 2×55500555055550² (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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50455049501 + ... + 50455050600.

It is an arithmetic number, because the mean of its divisors is an integer number (4692319654743).

Almost surely, 2^{55500555055550} is an apocalyptic number.

55500555055550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55500555055550 is an abundant number, since it is smaller than the sum of its proper divisors (57115116658282).

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

55500555055550 is a wasteful number, since it uses less digits than its factorization.

55500555055550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100910100124 (or 100910100119 counting only the distinct ones).

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

The spelling of 55500555055550 in words is "fifty-five trillion, five hundred billion, five hundred fifty-five million, fifty-five thousand, five hundred fifty".