505050555550 has 48 divisors (see below), whose sum is σ = 957562296912. Its totient is φ = 198150464000.

The previous prime is 505050555539. The next prime is 505050555557. The reversal of 505050555550 is 55555050505.

It is a super-2 number, since 2×505050555550² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505050555557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73014 + ... + 1007686.

It is an arithmetic number, because the mean of its divisors is an integer number (19949214519).

Almost surely, 2^505050555550 is an apocalyptic number.

505050555550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505050555550 is a deficient number, since it is larger than the sum of its proper divisors (452511741362).

505050555550 is a wasteful number, since it uses less digits than its factorization.

505050555550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934893 (or 934888 counting only the distinct ones).

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

The spelling of 505050555550 in words is "five hundred five billion, fifty million, five hundred fifty-five thousand, five hundred fifty".