505130247 has 6 divisors (see below), whose sum is σ = 729632592. Its totient is φ = 336753492.

The previous prime is 505130237. The next prime is 505130267. The reversal of 505130247 is 742031505.

It is a happy number.

505130247 is a `hidden beast` number, since 505 + 130 + 24 + 7 = 666.

It is not a de Polignac number, because 505130247 - 2¹⁰ = 505129223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505130247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505130237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28062783 + ... + 28062800.

It is an arithmetic number, because the mean of its divisors is an integer number (121605432).

Almost surely, 2^505130247 is an apocalyptic number.

505130247 is a deficient number, since it is larger than the sum of its proper divisors (224502345).

505130247 is a wasteful number, since it uses less digits than its factorization.

505130247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56125589 (or 56125586 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 505130247 is about 22475.1028251263. The cubic root of 505130247 is about 796.4058807101.

The spelling of 505130247 in words is "five hundred five million, one hundred thirty thousand, two hundred forty-seven".