144555557 has 2 divisors, whose sum is σ = 144555558. Its totient is φ = 144555556.

The previous prime is 144555547. The next prime is 144555571. The reversal of 144555557 is 755555441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107516161 + 37039396 = 10369^2 + 6086^2 .

It is an emirp because it is prime and its reverse (755555441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144555557 - 2⁶ = 144555493 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144555547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72277778 + 72277779.

It is an arithmetic number, because the mean of its divisors is an integer number (72277779).

Almost surely, 2^144555557 is an apocalyptic number.

It is an amenable number.

144555557 is a deficient number, since it is larger than the sum of its proper divisors (1).

144555557 is an equidigital number, since it uses as much as digits as its factorization.

144555557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 350000, while the sum is 41.

The square root of 144555557 is about 12023.1259246504. The cubic root of 144555557 is about 524.8214745982.

The spelling of 144555557 in words is "one hundred forty-four million, five hundred fifty-five thousand, five hundred fifty-seven".