147723161 has 2 divisors, whose sum is σ = 147723162. Its totient is φ = 147723160.

The previous prime is 147723133. The next prime is 147723193. The reversal of 147723161 is 161327741.

It is an a-pointer prime, because the next prime (147723193) can be obtained adding 147723161 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122522761 + 25200400 = 11069^2 + 5020^2 .

It is a cyclic number.

It is not a de Polignac number, because 147723161 - 2²⁶ = 80614297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (147723101) 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, 73861580 + 73861581.

It is an arithmetic number, because the mean of its divisors is an integer number (73861581).

Almost surely, 2^147723161 is an apocalyptic number.

It is an amenable number.

147723161 is a deficient number, since it is larger than the sum of its proper divisors (1).

147723161 is an equidigital number, since it uses as much as digits as its factorization.

147723161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 32.

The square root of 147723161 is about 12154.1417220633. The cubic root of 147723161 is about 528.6272306143.

The spelling of 147723161 in words is "one hundred forty-seven million, seven hundred twenty-three thousand, one hundred sixty-one".