503800055 has 16 divisors (see below), whose sum is σ = 666326304. Its totient is φ = 362618880.

The previous prime is 503800051. The next prime is 503800057. The reversal of 503800055 is 550008305.

It is not a de Polignac number, because 503800055 - 2² = 503800051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 503799997 and 503800033.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503800051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41882 + ... + 52551.

It is an arithmetic number, because the mean of its divisors is an integer number (41645394).

Almost surely, 2^503800055 is an apocalyptic number.

503800055 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

503800055 is a deficient number, since it is larger than the sum of its proper divisors (162526249).

503800055 is a wasteful number, since it uses less digits than its factorization.

503800055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94546.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 503800055 is about 22445.4907498143. The cubic root of 503800055 is about 795.7061905443.

The spelling of 503800055 in words is "five hundred three million, eight hundred thousand, fifty-five".