143544521 has 2 divisors, whose sum is σ = 143544522. Its totient is φ = 143544520.

The previous prime is 143544517. The next prime is 143544589. The reversal of 143544521 is 125445341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133079296 + 10465225 = 11536^2 + 3235^2 .

It is a cyclic number.

It is not a de Polignac number, because 143544521 - 2² = 143544517 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (143549521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71772260 + 71772261.

It is an arithmetic number, because the mean of its divisors is an integer number (71772261).

Almost surely, 2^143544521 is an apocalyptic number.

It is an amenable number.

143544521 is a deficient number, since it is larger than the sum of its proper divisors (1).

143544521 is an equidigital number, since it uses as much as digits as its factorization.

143544521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 29.

The square root of 143544521 is about 11981.0066772371. The cubic root of 143544521 is about 523.5950596496.

Adding to 143544521 its reverse (125445341), we get a palindrome (268989862).

The spelling of 143544521 in words is "one hundred forty-three million, five hundred forty-four thousand, five hundred twenty-one".