144220547 has 2 divisors, whose sum is σ = 144220548. Its totient is φ = 144220546.

The previous prime is 144220543. The next prime is 144220613. The reversal of 144220547 is 745022441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144220547 - 2² = 144220543 is a prime.

It is not a weakly prime, because it can be changed into another prime (144220541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72110273 + 72110274.

It is an arithmetic number, because the mean of its divisors is an integer number (72110274).

Almost surely, 2^144220547 is an apocalyptic number.

144220547 is a deficient number, since it is larger than the sum of its proper divisors (1).

144220547 is an equidigital number, since it uses as much as digits as its factorization.

144220547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 144220547 is about 12009.1859424359. The cubic root of 144220547 is about 524.4157333886.

Adding to 144220547 its reverse (745022441), we get a palindrome (889242988).

The spelling of 144220547 in words is "one hundred forty-four million, two hundred twenty thousand, five hundred forty-seven".