550577555503 has 4 divisors (see below), whose sum is σ = 551566025640. Its totient is φ = 549589085368.

The previous prime is 550577555483. The next prime is 550577555519. The reversal of 550577555503 is 305555775055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 550577555503 - 2⁹ = 550577554991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550577555533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494234233 + ... + 494235346.

It is an arithmetic number, because the mean of its divisors is an integer number (137891506410).

Almost surely, 2^550577555503 is an apocalyptic number.

550577555503 is a deficient number, since it is larger than the sum of its proper divisors (988470137).

550577555503 is an equidigital number, since it uses as much as digits as its factorization.

550577555503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988470136.

The product of its (nonzero) digits is 11484375, while the sum is 52.

The spelling of 550577555503 in words is "five hundred fifty billion, five hundred seventy-seven million, five hundred fifty-five thousand, five hundred three".