65020511 has 2 divisors, whose sum is σ = 65020512. Its totient is φ = 65020510.

The previous prime is 65020499. The next prime is 65020519. The reversal of 65020511 is 11502056.

65020511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65020511 - 2¹⁸ = 64758367 is a prime.

It is a super-2 number, since 2×65020511² = 8455333701402242, 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 (65020519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32510255 + 32510256.

It is an arithmetic number, because the mean of its divisors is an integer number (32510256).

Almost surely, 2^65020511 is an apocalyptic number.

65020511 is a deficient number, since it is larger than the sum of its proper divisors (1).

65020511 is an equidigital number, since it uses as much as digits as its factorization.

65020511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 65020511 is about 8063.5296861858. The cubic root of 65020511 is about 402.1148632605.

Adding to 65020511 its reverse (11502056), we get a palindrome (76522567).

The spelling of 65020511 in words is "sixty-five million, twenty thousand, five hundred eleven".