65145511 has 2 divisors, whose sum is σ = 65145512. Its totient is φ = 65145510.

The previous prime is 65145469. The next prime is 65145523. The reversal of 65145511 is 11554156.

It is a happy number.

65145511 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 a de Polignac number, because none of the positive numbers 2^k-65145511 is a prime.

It is a super-2 number, since 2×65145511² = 8487875206902242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65145511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65145211) 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, 32572755 + 32572756.

It is an arithmetic number, because the mean of its divisors is an integer number (32572756).

Almost surely, 2^65145511 is an apocalyptic number.

65145511 is a deficient number, since it is larger than the sum of its proper divisors (1).

65145511 is an equidigital number, since it uses as much as digits as its factorization.

65145511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000, while the sum is 28.

The square root of 65145511 is about 8071.2769126081. The cubic root of 65145511 is about 402.3723829309.

Adding to 65145511 its reverse (11554156), we get a palindrome (76699667).

It can be divided in two parts, 65145 and 511, that added together give a palindrome (65656).

The spelling of 65145511 in words is "sixty-five million, one hundred forty-five thousand, five hundred eleven".