64752481 has 2 divisors, whose sum is σ = 64752482. Its totient is φ = 64752480.

The previous prime is 64752463. The next prime is 64752491. The reversal of 64752481 is 18425746.

64752481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64144081 + 608400 = 8009^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 64752481 - 2⁵ = 64752449 is a prime.

It is a super-2 number, since 2×64752481² = 8385767591310722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_3826819 and since 64752481 and 3826819 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64752481.

It is not a weakly prime, because it can be changed into another prime (64752491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32376240 + 32376241.

It is an arithmetic number, because the mean of its divisors is an integer number (32376241).

Almost surely, 2^64752481 is an apocalyptic number.

It is an amenable number.

64752481 is a deficient number, since it is larger than the sum of its proper divisors (1).

64752481 is an equidigital number, since it uses as much as digits as its factorization.

64752481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 37.

The square root of 64752481 is about 8046.8926300778. The cubic root of 64752481 is about 401.5615646069.

The spelling of 64752481 in words is "sixty-four million, seven hundred fifty-two thousand, four hundred eighty-one".