64252493 has 2 divisors, whose sum is σ = 64252494. Its totient is φ = 64252492.

The previous prime is 64252477. The next prime is 64252511. The reversal of 64252493 is 39425246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59938564 + 4313929 = 7742^2 + 2077^2 .

It is a cyclic number.

It is not a de Polignac number, because 64252493 - 2⁴ = 64252477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64252403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32126246 + 32126247.

It is an arithmetic number, because the mean of its divisors is an integer number (32126247).

Almost surely, 2^64252493 is an apocalyptic number.

It is an amenable number.

64252493 is a deficient number, since it is larger than the sum of its proper divisors (1).

64252493 is an equidigital number, since it uses as much as digits as its factorization.

64252493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 64252493 is about 8015.7652784996. The cubic root of 64252493 is about 400.5253368343.

It can be divided in two parts, 642 and 52493, that added together give a palindrome (53135).

The spelling of 64252493 in words is "sixty-four million, two hundred fifty-two thousand, four hundred ninety-three".