172714561 has 2 divisors, whose sum is σ = 172714562. Its totient is φ = 172714560.

The previous prime is 172714559. The next prime is 172714571. The reversal of 172714561 is 165417271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90250000 + 82464561 = 9500^2 + 9081^2 .

It is a cyclic number.

It is not a de Polignac number, because 172714561 - 2¹ = 172714559 is a prime.

Together with 172714559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (172714571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86357280 + 86357281.

It is an arithmetic number, because the mean of its divisors is an integer number (86357281).

Almost surely, 2^172714561 is an apocalyptic number.

It is an amenable number.

172714561 is a deficient number, since it is larger than the sum of its proper divisors (1).

172714561 is an equidigital number, since it uses as much as digits as its factorization.

172714561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 34.

The square root of 172714561 is about 13142.0911958486. The cubic root of 172714561 is about 556.8988456616.

The spelling of 172714561 in words is "one hundred seventy-two million, seven hundred fourteen thousand, five hundred sixty-one".