505255527550 has 24 divisors (see below), whose sum is σ = 962696633472. Its totient is φ = 197172888000.

The previous prime is 505255527541. The next prime is 505255527593. The reversal of 505255527550 is 55725552505.

It is a self number, because there is not a number n which added to its sum of digits gives 505255527550.

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, 123231006 + ... + 123235105.

It is an arithmetic number, because the mean of its divisors is an integer number (40112359728).

Almost surely, 2^505255527550 is an apocalyptic number.

505255527550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505255527550 is a deficient number, since it is larger than the sum of its proper divisors (457441105922).

505255527550 is a wasteful number, since it uses less digits than its factorization.

505255527550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246466164 (or 246466159 counting only the distinct ones).

The product of its (nonzero) digits is 2187500, while the sum is 46.

The spelling of 505255527550 in words is "five hundred five billion, two hundred fifty-five million, five hundred twenty-seven thousand, five hundred fifty".