505000500551 has 2 divisors, whose sum is σ = 505000500552. Its totient is φ = 505000500550.

The previous prime is 505000500479. The next prime is 505000500553. The reversal of 505000500551 is 155005000505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505000500551 - 2¹⁰ = 505000499527 is a prime.

It is a Sophie Germain prime.

Together with 505000500553, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505000500551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505000500553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252500250275 + 252500250276.

It is an arithmetic number, because the mean of its divisors is an integer number (252500250276).

Almost surely, 2^505000500551 is an apocalyptic number.

505000500551 is a deficient number, since it is larger than the sum of its proper divisors (1).

505000500551 is an equidigital number, since it uses as much as digits as its factorization.

505000500551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3125, while the sum is 26.

The spelling of 505000500551 in words is "five hundred five billion, five hundred thousand, five hundred fifty-one".