64251241 has 2 divisors, whose sum is σ = 64251242. Its totient is φ = 64251240.

The previous prime is 64251233. The next prime is 64251247. The reversal of 64251241 is 14215246.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42302016 + 21949225 = 6504^2 + 4685^2 .

It is a cyclic number.

It is not a de Polignac number, because 64251241 - 2³ = 64251233 is a prime.

It is not a weakly prime, because it can be changed into another prime (64251247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32125620 + 32125621.

It is an arithmetic number, because the mean of its divisors is an integer number (32125621).

Almost surely, 2^64251241 is an apocalyptic number.

It is an amenable number.

64251241 is a deficient number, since it is larger than the sum of its proper divisors (1).

64251241 is an equidigital number, since it uses as much as digits as its factorization.

64251241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

The square root of 64251241 is about 8015.6871820200. The cubic root of 64251241 is about 400.5227353219.

Adding to 64251241 its reverse (14215246), we get a palindrome (78466487).

The spelling of 64251241 in words is "sixty-four million, two hundred fifty-one thousand, two hundred forty-one".