64081541 has 2 divisors, whose sum is σ = 64081542. Its totient is φ = 64081540.

The previous prime is 64081529. The next prime is 64081579. The reversal of 64081541 is 14518046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55502500 + 8579041 = 7450^2 + 2929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64081541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64881541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32040770 + 32040771.

It is an arithmetic number, because the mean of its divisors is an integer number (32040771).

Almost surely, 2^64081541 is an apocalyptic number.

It is an amenable number.

64081541 is a deficient number, since it is larger than the sum of its proper divisors (1).

64081541 is an equidigital number, since it uses as much as digits as its factorization.

64081541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 64081541 is about 8005.0946902582. The cubic root of 64081541 is about 400.1698049888.

Adding to 64081541 its reverse (14518046), we get a palindrome (78599587).

The spelling of 64081541 in words is "sixty-four million, eighty-one thousand, five hundred forty-one".