64071251 has 2 divisors, whose sum is σ = 64071252. Its totient is φ = 64071250.

The previous prime is 64071239. The next prime is 64071257. The reversal of 64071251 is 15217046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64071251 - 2⁶ = 64071187 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64071251.

It is not a weakly prime, because it can be changed into another prime (64071257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32035625 + 32035626.

It is an arithmetic number, because the mean of its divisors is an integer number (32035626).

Almost surely, 2^64071251 is an apocalyptic number.

64071251 is a deficient number, since it is larger than the sum of its proper divisors (1).

64071251 is an equidigital number, since it uses as much as digits as its factorization.

64071251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 64071251 is about 8004.4519487595. The cubic root of 64071251 is about 400.1483845316.

Adding to 64071251 its reverse (15217046), we get a palindrome (79288297).

The spelling of 64071251 in words is "sixty-four million, seventy-one thousand, two hundred fifty-one".