505544240550 has 48 divisors (see below), whose sum is σ = 1274999734080. Its totient is φ = 132526849440.

The previous prime is 505544240521. The next prime is 505544240563. The reversal of 505544240550 is 55042445505.

It is a junction number, because it is equal to n+sod(n) for n = 505544240499 and 505544240508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28552972 + ... + 28570671.

It is an arithmetic number, because the mean of its divisors is an integer number (26562494460).

Almost surely, 2^505544240550 is an apocalyptic number.

505544240550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505544240550 is an abundant number, since it is smaller than the sum of its proper divisors (769455493530).

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

505544240550 is a wasteful number, since it uses less digits than its factorization.

505544240550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57123717 (or 57123712 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 39.

The spelling of 505544240550 in words is "five hundred five billion, five hundred forty-four million, two hundred forty thousand, five hundred fifty".