144402547 has 2 divisors, whose sum is σ = 144402548. Its totient is φ = 144402546.

The previous prime is 144402523. The next prime is 144402611. The reversal of 144402547 is 745204441.

144402547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144402547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144402047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72201273 + 72201274.

It is an arithmetic number, because the mean of its divisors is an integer number (72201274).

Almost surely, 2^144402547 is an apocalyptic number.

144402547 is a deficient number, since it is larger than the sum of its proper divisors (1).

144402547 is an equidigital number, since it uses as much as digits as its factorization.

144402547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 144402547 is about 12016.7610860831. The cubic root of 144402547 is about 524.6362372049.

Adding to 144402547 its reverse (745204441), we get a palindrome (889606988).

The spelling of 144402547 in words is "one hundred forty-four million, four hundred two thousand, five hundred forty-seven".