505001000550 has 48 divisors (see below), whose sum is σ = 1252752385680. Its totient is φ = 134629309440.

The previous prime is 505001000531. The next prime is 505001000573. The reversal of 505001000550 is 55000100505.

It is a super-2 number, since 2×505001000550² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70446 + ... + 1007454.

It is an arithmetic number, because the mean of its divisors is an integer number (26099008035).

Almost surely, 2^505001000550 is an apocalyptic number.

505001000550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505001000550 is an abundant number, since it is smaller than the sum of its proper divisors (747751385130).

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

505001000550 is a wasteful number, since it uses less digits than its factorization.

505001000550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940617 (or 940612 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 21.

The spelling of 505001000550 in words is "five hundred five billion, one million, five hundred fifty", and thus it is an aban number.