511317047 has 2 divisors, whose sum is σ = 511317048. Its totient is φ = 511317046.

The previous prime is 511317043. The next prime is 511317073. The reversal of 511317047 is 740713115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 511317047 - 2² = 511317043 is a prime.

It is a super-2 number, since 2×511317047² = 522890245105600418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511317043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255658523 + 255658524.

It is an arithmetic number, because the mean of its divisors is an integer number (255658524).

Almost surely, 2^511317047 is an apocalyptic number.

511317047 is a deficient number, since it is larger than the sum of its proper divisors (1).

511317047 is an equidigital number, since it uses as much as digits as its factorization.

511317047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 511317047 is about 22612.3206902786. The cubic root of 511317047 is about 799.6441370379.

The spelling of 511317047 in words is "five hundred eleven million, three hundred seventeen thousand, forty-seven".