159222761 has 2 divisors, whose sum is σ = 159222762. Its totient is φ = 159222760.

The previous prime is 159222751. The next prime is 159222773. The reversal of 159222761 is 167222951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145347136 + 13875625 = 12056^2 + 3725^2 .

It is a cyclic number.

It is not a de Polignac number, because 159222761 - 2¹⁸ = 158960617 is a prime.

It is not a weakly prime, because it can be changed into another prime (159222751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79611380 + 79611381.

It is an arithmetic number, because the mean of its divisors is an integer number (79611381).

Almost surely, 2^159222761 is an apocalyptic number.

It is an amenable number.

159222761 is a deficient number, since it is larger than the sum of its proper divisors (1).

159222761 is an equidigital number, since it uses as much as digits as its factorization.

159222761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 159222761 is about 12618.3501694952. The cubic root of 159222761 is about 542.0030330300.

The spelling of 159222761 in words is "one hundred fifty-nine million, two hundred twenty-two thousand, seven hundred sixty-one".