505219257 has 24 divisors (see below), whose sum is σ = 742629888. Its totient is φ = 330919200.

The previous prime is 505219213. The next prime is 505219387. The reversal of 505219257 is 752912505.

It is not a de Polignac number, because 505219257 - 2⁷ = 505219129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505215257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140907 + ... + 144447.

It is an arithmetic number, because the mean of its divisors is an integer number (30942912).

Almost surely, 2^505219257 is an apocalyptic number.

It is an amenable number.

505219257 is a deficient number, since it is larger than the sum of its proper divisors (237410631).

505219257 is a wasteful number, since it uses less digits than its factorization.

505219257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821 (or 3818 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 505219257 is about 22477.0829290635. The cubic root of 505219257 is about 796.4526567146.

The spelling of 505219257 in words is "five hundred five million, two hundred nineteen thousand, two hundred fifty-seven".