505257303 has 4 divisors (see below), whose sum is σ = 673676408. Its totient is φ = 336838200.

The previous prime is 505257301. The next prime is 505257349. The reversal of 505257303 is 303752505.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 505257303 - 2¹ = 505257301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505257301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84209548 + ... + 84209553.

It is an arithmetic number, because the mean of its divisors is an integer number (168419102).

Almost surely, 2^505257303 is an apocalyptic number.

505257303 is a deficient number, since it is larger than the sum of its proper divisors (168419105).

505257303 is a wasteful number, since it uses less digits than its factorization.

505257303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168419104.

The product of its (nonzero) digits is 15750, while the sum is 30.

The square root of 505257303 is about 22477.9292418141. The cubic root of 505257303 is about 796.4726487456.

The spelling of 505257303 in words is "five hundred five million, two hundred fifty-seven thousand, three hundred three".