64335251 has 2 divisors, whose sum is σ = 64335252. Its totient is φ = 64335250.

The previous prime is 64335233. The next prime is 64335263. The reversal of 64335251 is 15253346.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64335251 - 2¹⁴ = 64318867 is a prime.

It is not a weakly prime, because it can be changed into another prime (64335221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32167625 + 32167626.

It is an arithmetic number, because the mean of its divisors is an integer number (32167626).

Almost surely, 2^64335251 is an apocalyptic number.

64335251 is a deficient number, since it is larger than the sum of its proper divisors (1).

64335251 is an equidigital number, since it uses as much as digits as its factorization.

64335251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 64335251 is about 8020.9258193802. The cubic root of 64335251 is about 400.6972235754.

Adding to 64335251 its reverse (15253346), we get a palindrome (79588597).

The spelling of 64335251 in words is "sixty-four million, three hundred thirty-five thousand, two hundred fifty-one".