64217453 has 2 divisors, whose sum is σ = 64217454. Its totient is φ = 64217452.

The previous prime is 64217437. The next prime is 64217471. The reversal of 64217453 is 35471246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37982569 + 26234884 = 6163^2 + 5122^2 .

It is a cyclic number.

It is not a de Polignac number, because 64217453 - 2⁴ = 64217437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64217353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32108726 + 32108727.

It is an arithmetic number, because the mean of its divisors is an integer number (32108727).

Almost surely, 2^64217453 is an apocalyptic number.

It is an amenable number.

64217453 is a deficient number, since it is larger than the sum of its proper divisors (1).

64217453 is an equidigital number, since it uses as much as digits as its factorization.

64217453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 32.

The square root of 64217453 is about 8013.5792876841. The cubic root of 64217453 is about 400.4525149658.

Adding to 64217453 its reverse (35471246), we get a palindrome (99688699).

The spelling of 64217453 in words is "sixty-four million, two hundred seventeen thousand, four hundred fifty-three".