64651253 has 2 divisors, whose sum is σ = 64651254. Its totient is φ = 64651252.

The previous prime is 64651241. The next prime is 64651267. The reversal of 64651253 is 35215646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35307364 + 29343889 = 5942^2 + 5417^2 .

It is a cyclic number.

It is not a de Polignac number, because 64651253 - 2⁸ = 64650997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64651283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32325626 + 32325627.

It is an arithmetic number, because the mean of its divisors is an integer number (32325627).

Almost surely, 2^64651253 is an apocalyptic number.

It is an amenable number.

64651253 is a deficient number, since it is larger than the sum of its proper divisors (1).

64651253 is an equidigital number, since it uses as much as digits as its factorization.

64651253 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 64651253 is about 8040.6002885357. The cubic root of 64651253 is about 401.3522008148.

Adding to 64651253 its reverse (35215646), we get a palindrome (99866899).

The spelling of 64651253 in words is "sixty-four million, six hundred fifty-one thousand, two hundred fifty-three".