505166003 has 2 divisors, whose sum is σ = 505166004. Its totient is φ = 505166002.

The previous prime is 505165957. The next prime is 505166017. The reversal of 505166003 is 300661505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505166003 - 2¹² = 505161907 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (505166023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252583001 + 252583002.

It is an arithmetic number, because the mean of its divisors is an integer number (252583002).

Almost surely, 2^505166003 is an apocalyptic number.

505166003 is a deficient number, since it is larger than the sum of its proper divisors (1).

505166003 is an equidigital number, since it uses as much as digits as its factorization.

505166003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 505166003 is about 22475.8982690348. The cubic root of 505166003 is about 796.4246716503.

The spelling of 505166003 in words is "five hundred five million, one hundred sixty-six thousand, three".