505105603 has 2 divisors, whose sum is σ = 505105604. Its totient is φ = 505105602.

The previous prime is 505105597. The next prime is 505105607. The reversal of 505105603 is 306501505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505105603 - 2⁵ = 505105571 is a prime.

It is not a weakly prime, because it can be changed into another prime (505105607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252552801 + 252552802.

It is an arithmetic number, because the mean of its divisors is an integer number (252552802).

Almost surely, 2^505105603 is an apocalyptic number.

505105603 is a deficient number, since it is larger than the sum of its proper divisors (1).

505105603 is an equidigital number, since it uses as much as digits as its factorization.

505105603 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 505105603 is about 22474.5545673324. The cubic root of 505105603 is about 796.3929289709.

The spelling of 505105603 in words is "five hundred five million, one hundred five thousand, six hundred three".