64520353 has 2 divisors, whose sum is σ = 64520354. Its totient is φ = 64520352.

The previous prime is 64520317. The next prime is 64520369. The reversal of 64520353 is 35302546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48902049 + 15618304 = 6993^2 + 3952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64520353 is a prime.

It is not a weakly prime, because it can be changed into another prime (64520383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32260176 + 32260177.

It is an arithmetic number, because the mean of its divisors is an integer number (32260177).

Almost surely, 2^64520353 is an apocalyptic number.

It is an amenable number.

64520353 is a deficient number, since it is larger than the sum of its proper divisors (1).

64520353 is an equidigital number, since it uses as much as digits as its factorization.

64520353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 64520353 is about 8032.4562245928. The cubic root of 64520353 is about 401.0811439367.

Adding to 64520353 its reverse (35302546), we get a palindrome (99822899).

The spelling of 64520353 in words is "sixty-four million, five hundred twenty thousand, three hundred fifty-three".