506565511 has 2 divisors, whose sum is σ = 506565512. Its totient is φ = 506565510.

The previous prime is 506565509. The next prime is 506565529. The reversal of 506565511 is 115565605.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 506565511 - 2¹ = 506565509 is a prime.

It is a super-2 number, since 2×506565511² = 513217233869382242, which contains 22 as substring.

Together with 506565509, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506565211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253282755 + 253282756.

It is an arithmetic number, because the mean of its divisors is an integer number (253282756).

Almost surely, 2^506565511 is an apocalyptic number.

506565511 is a deficient number, since it is larger than the sum of its proper divisors (1).

506565511 is an equidigital number, since it uses as much as digits as its factorization.

506565511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 506565511 is about 22507.0102634712. The cubic root of 506565511 is about 797.1594631040.

The spelling of 506565511 in words is "five hundred six million, five hundred sixty-five thousand, five hundred eleven".