505610503 has 2 divisors, whose sum is σ = 505610504. Its totient is φ = 505610502.

The previous prime is 505610473. The next prime is 505610531. The reversal of 505610503 is 305016505.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505610503 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505610533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252805251 + 252805252.

It is an arithmetic number, because the mean of its divisors is an integer number (252805252).

Almost surely, 2^505610503 is an apocalyptic number.

505610503 is a deficient number, since it is larger than the sum of its proper divisors (1).

505610503 is an equidigital number, since it uses as much as digits as its factorization.

505610503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 505610503 is about 22485.7844648569. The cubic root of 505610503 is about 796.6581968564.

The spelling of 505610503 in words is "five hundred five million, six hundred ten thousand, five hundred three".