144715861 has 2 divisors, whose sum is σ = 144715862. Its totient is φ = 144715860.

The previous prime is 144715847. The next prime is 144715871. The reversal of 144715861 is 168517441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116424100 + 28291761 = 10790^2 + 5319^2 .

It is a cyclic number.

It is not a de Polignac number, because 144715861 - 2⁷ = 144715733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144715861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144715871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72357930 + 72357931.

It is an arithmetic number, because the mean of its divisors is an integer number (72357931).

Almost surely, 2^144715861 is an apocalyptic number.

It is an amenable number.

144715861 is a deficient number, since it is larger than the sum of its proper divisors (1).

144715861 is an equidigital number, since it uses as much as digits as its factorization.

144715861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 37.

The square root of 144715861 is about 12029.7905634304. The cubic root of 144715861 is about 525.0154021181.

The spelling of 144715861 in words is "one hundred forty-four million, seven hundred fifteen thousand, eight hundred sixty-one".