144111521 has 2 divisors, whose sum is σ = 144111522. Its totient is φ = 144111520.

The previous prime is 144111497. The next prime is 144111551. The reversal of 144111521 is 125111441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99221521 + 44890000 = 9961^2 + 6700^2 .

It is a cyclic number.

It is not a de Polignac number, because 144111521 - 2¹⁴ = 144095137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144111493 and 144111502.

It is not a weakly prime, because it can be changed into another prime (144111551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72055760 + 72055761.

It is an arithmetic number, because the mean of its divisors is an integer number (72055761).

Almost surely, 2^144111521 is an apocalyptic number.

It is an amenable number.

144111521 is a deficient number, since it is larger than the sum of its proper divisors (1).

144111521 is an equidigital number, since it uses as much as digits as its factorization.

144111521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160, while the sum is 20.

The square root of 144111521 is about 12004.6458090191. The cubic root of 144111521 is about 524.2835530475.

Adding to 144111521 its reverse (125111441), we get a palindrome (269222962).

The spelling of 144111521 in words is "one hundred forty-four million, one hundred eleven thousand, five hundred twenty-one".