505143247 has 8 divisors (see below), whose sum is σ = 591387552. Its totient is φ = 422419200.

The previous prime is 505143167. The next prime is 505143293. The reversal of 505143247 is 742341505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505143247 - 2¹⁵ = 505110479 is a prime.

It is a super-3 number, since 3×505143247³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505143347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 879754 + ... + 880327.

It is an arithmetic number, because the mean of its divisors is an integer number (73923444).

Almost surely, 2^505143247 is an apocalyptic number.

505143247 is a deficient number, since it is larger than the sum of its proper divisors (86244305).

505143247 is a wasteful number, since it uses less digits than its factorization.

505143247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760129.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 505143247 is about 22475.3920321760. The cubic root of 505143247 is about 796.4127127352.

The spelling of 505143247 in words is "five hundred five million, one hundred forty-three thousand, two hundred forty-seven".