65315533 has 2 divisors, whose sum is σ = 65315534. Its totient is φ = 65315532.

The previous prime is 65315531. The next prime is 65315573. The reversal of 65315533 is 33551356.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33200644 + 32114889 = 5762^2 + 5667^2 .

It is a cyclic number.

It is not a de Polignac number, because 65315533 - 2¹ = 65315531 is a prime.

It is a super-2 number, since 2×65315533² = 8532237702148178, which contains 22 as substring.

Together with 65315531, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 65315495 and 65315504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65315531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32657766 + 32657767.

It is an arithmetic number, because the mean of its divisors is an integer number (32657767).

Almost surely, 2^65315533 is an apocalyptic number.

It is an amenable number.

65315533 is a deficient number, since it is larger than the sum of its proper divisors (1).

65315533 is an equidigital number, since it uses as much as digits as its factorization.

65315533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20250, while the sum is 31.

The square root of 65315533 is about 8081.8025835825. The cubic root of 65315533 is about 402.7221267916.

Adding to 65315533 its reverse (33551356), we get a palindrome (98866889).

The spelling of 65315533 in words is "sixty-five million, three hundred fifteen thousand, five hundred thirty-three".