64520033 has 2 divisors, whose sum is σ = 64520034. Its totient is φ = 64520032.

The previous prime is 64520017. The next prime is 64520039. The reversal of 64520033 is 33002546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58721569 + 5798464 = 7663^2 + 2408^2 .

It is a cyclic number.

It is not a de Polignac number, because 64520033 - 2⁴ = 64520017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64519990 and 64520008.

It is not a weakly prime, because it can be changed into another prime (64520039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32260016 + 32260017.

It is an arithmetic number, because the mean of its divisors is an integer number (32260017).

Almost surely, 2^64520033 is an apocalyptic number.

It is an amenable number.

64520033 is a deficient number, since it is larger than the sum of its proper divisors (1).

64520033 is an equidigital number, since it uses as much as digits as its factorization.

64520033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 64520033 is about 8032.4363053808. The cubic root of 64520033 is about 401.0804808582.

Adding to 64520033 its reverse (33002546), we get a palindrome (97522579).

The spelling of 64520033 in words is "sixty-four million, five hundred twenty thousand, thirty-three".