64516253 has 2 divisors, whose sum is σ = 64516254. Its totient is φ = 64516252.

The previous prime is 64516181. The next prime is 64516261. The reversal of 64516253 is 35261546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32684089 + 31832164 = 5717^2 + 5642^2 .

It is a cyclic number.

It is not a de Polignac number, because 64516253 - 2¹⁰ = 64515229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64516273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32258126 + 32258127.

It is an arithmetic number, because the mean of its divisors is an integer number (32258127).

Almost surely, 2^64516253 is an apocalyptic number.

It is an amenable number.

64516253 is a deficient number, since it is larger than the sum of its proper divisors (1).

64516253 is an equidigital number, since it uses as much as digits as its factorization.

64516253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 64516253 is about 8032.2010059510. The cubic root of 64516253 is about 401.0726480774.

Adding to 64516253 its reverse (35261546), we get a palindrome (99777799).

The spelling of 64516253 in words is "sixty-four million, five hundred sixteen thousand, two hundred fifty-three".