505718047 has 2 divisors, whose sum is σ = 505718048. Its totient is φ = 505718046.

The previous prime is 505718029. The next prime is 505718051. The reversal of 505718047 is 740817505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505718047 - 2²⁷ = 371500319 is a prime.

It is a super-2 number, since 2×505718047² = 511501486122988418, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 505717997 and 505718015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505718347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252859023 + 252859024.

It is an arithmetic number, because the mean of its divisors is an integer number (252859024).

Almost surely, 2^505718047 is an apocalyptic number.

505718047 is a deficient number, since it is larger than the sum of its proper divisors (1).

505718047 is an equidigital number, since it uses as much as digits as its factorization.

505718047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 505718047 is about 22488.1757152509. The cubic root of 505718047 is about 796.7146762576.

It can be divided in two parts, 5057 and 18047, that added together give a square (23104 = 152²).

The spelling of 505718047 in words is "five hundred five million, seven hundred eighteen thousand, forty-seven".