505006903 has 2 divisors, whose sum is σ = 505006904. Its totient is φ = 505006902.

The previous prime is 505006897. The next prime is 505006907. The reversal of 505006903 is 309600505.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505006903 - 2²¹ = 502909751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505006907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252503451 + 252503452.

It is an arithmetic number, because the mean of its divisors is an integer number (252503452).

Almost surely, 2^505006903 is an apocalyptic number.

505006903 is a deficient number, since it is larger than the sum of its proper divisors (1).

505006903 is an equidigital number, since it uses as much as digits as its factorization.

505006903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 505006903 is about 22472.3586434535. The cubic root of 505006903 is about 796.3410526226.

The spelling of 505006903 in words is "five hundred five million, six thousand, nine hundred three".