65715451 has 2 divisors, whose sum is σ = 65715452. Its totient is φ = 65715450.

The previous prime is 65715449. The next prime is 65715469. The reversal of 65715451 is 15451756.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65715451 - 2¹ = 65715449 is a prime.

Together with 65715449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (65715401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32857725 + 32857726.

It is an arithmetic number, because the mean of its divisors is an integer number (32857726).

Almost surely, 2^65715451 is an apocalyptic number.

65715451 is a deficient number, since it is larger than the sum of its proper divisors (1).

65715451 is an equidigital number, since it uses as much as digits as its factorization.

65715451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21000, while the sum is 34.

The square root of 65715451 is about 8106.5067075776. The cubic root of 65715451 is about 403.5423922842.

It can be divided in two parts, 65715 and 451, that added together give a palindrome (66166).

The spelling of 65715451 in words is "sixty-five million, seven hundred fifteen thousand, four hundred fifty-one".