550055505550 has 24 divisors (see below), whose sum is σ = 1025313009696. Its totient is φ = 219546983040.

The previous prime is 550055505541. The next prime is 550055505607. The reversal of 550055505550 is 55505550055.

It is a super-2 number, since 2×550055505550² (a number of 24 digits) contains 22 as substring.

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, 11857099 + ... + 11903398.

It is an arithmetic number, because the mean of its divisors is an integer number (42721375404).

Almost surely, 2^550055505550 is an apocalyptic number.

550055505550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

550055505550 is a deficient number, since it is larger than the sum of its proper divisors (475257504146).

550055505550 is a wasteful number, since it uses less digits than its factorization.

550055505550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23760972 (or 23760967 counting only the distinct ones).

The product of its (nonzero) digits is 390625, while the sum is 40.

The spelling of 550055505550 in words is "five hundred fifty billion, fifty-five million, five hundred five thousand, five hundred fifty".