64251541 has 2 divisors, whose sum is σ = 64251542. Its totient is φ = 64251540.

The previous prime is 64251527. The next prime is 64251547. The reversal of 64251541 is 14515246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59752900 + 4498641 = 7730^2 + 2121^2 .

It is a cyclic number.

It is not a de Polignac number, because 64251541 - 2¹⁵ = 64218773 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 (64251547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32125770 + 32125771.

It is an arithmetic number, because the mean of its divisors is an integer number (32125771).

Almost surely, 2^64251541 is an apocalyptic number.

It is an amenable number.

64251541 is a deficient number, since it is larger than the sum of its proper divisors (1).

64251541 is an equidigital number, since it uses as much as digits as its factorization.

64251541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 28.

The square root of 64251541 is about 8015.7058953033. The cubic root of 64251541 is about 400.5233586906.

Adding to 64251541 its reverse (14515246), we get a palindrome (78766787).

The spelling of 64251541 in words is "sixty-four million, two hundred fifty-one thousand, five hundred forty-one".