55555000550 has 24 divisors (see below), whose sum is σ = 118094059056. Its totient is φ = 19047428640.

The previous prime is 55555000547. The next prime is 55555000577. The reversal of 55555000550 is 5500055555.

It is a super-2 number, since 2×55555000550² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 55555000550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79363937 + ... + 79364636.

It is an arithmetic number, because the mean of its divisors is an integer number (4920585794).

Almost surely, 2^55555000550 is an apocalyptic number.

55555000550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55555000550 is an abundant number, since it is smaller than the sum of its proper divisors (62539058506).

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

55555000550 is a wasteful number, since it uses less digits than its factorization.

55555000550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158728592 (or 158728587 counting only the distinct ones).

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

The spelling of 55555000550 in words is "fifty-five billion, five hundred fifty-five million, five hundred fifty", and thus it is an aban number.