144891157 has 2 divisors, whose sum is σ = 144891158. Its totient is φ = 144891156.

The previous prime is 144891151. The next prime is 144891217. The reversal of 144891157 is 751198441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136212241 + 8678916 = 11671^2 + 2946^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144891157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144891151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72445578 + 72445579.

It is an arithmetic number, because the mean of its divisors is an integer number (72445579).

Almost surely, 2^144891157 is an apocalyptic number.

It is an amenable number.

144891157 is a deficient number, since it is larger than the sum of its proper divisors (1).

144891157 is an equidigital number, since it uses as much as digits as its factorization.

144891157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 40.

The square root of 144891157 is about 12037.0742707686. The cubic root of 144891157 is about 525.2273023296.

The spelling of 144891157 in words is "one hundred forty-four million, eight hundred ninety-one thousand, one hundred fifty-seven".