64254251 has 2 divisors, whose sum is σ = 64254252. Its totient is φ = 64254250.

The previous prime is 64254221. The next prime is 64254259. The reversal of 64254251 is 15245246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64254251 - 2⁶ = 64254187 is a prime.

It is not a weakly prime, because it can be changed into another prime (64254259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32127125 + 32127126.

It is an arithmetic number, because the mean of its divisors is an integer number (32127126).

Almost surely, 2^64254251 is an apocalyptic number.

64254251 is a deficient number, since it is larger than the sum of its proper divisors (1).

64254251 is an equidigital number, since it uses as much as digits as its factorization.

64254251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 29.

The square root of 64254251 is about 8015.8749366491. The cubic root of 64254251 is about 400.5289896997.

Adding to 64254251 its reverse (15245246), we get a palindrome (79499497).

The spelling of 64254251 in words is "sixty-four million, two hundred fifty-four thousand, two hundred fifty-one".