505055000557 has 4 divisors (see below), whose sum is σ = 506226822336. Its totient is φ = 503883178780.

The previous prime is 505055000533. The next prime is 505055000561. The reversal of 505055000557 is 755000550505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505055000557 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 (505055000507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585910243 + ... + 585911104.

It is an arithmetic number, because the mean of its divisors is an integer number (126556705584).

Almost surely, 2^505055000557 is an apocalyptic number.

It is an amenable number.

505055000557 is a deficient number, since it is larger than the sum of its proper divisors (1171821779).

505055000557 is a wasteful number, since it uses less digits than its factorization.

505055000557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171821778.

The product of its (nonzero) digits is 109375, while the sum is 37.

The spelling of 505055000557 in words is "five hundred five billion, fifty-five million, five hundred fifty-seven", and thus it is an aban number.