172340057 has 2 divisors, whose sum is σ = 172340058. Its totient is φ = 172340056.

The previous prime is 172340041. The next prime is 172340059. The reversal of 172340057 is 750043271.

172340057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109914256 + 62425801 = 10484^2 + 7901^2 .

It is a cyclic number.

It is not a de Polignac number, because 172340057 - 2⁴ = 172340041 is a prime.

Together with 172340059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172340059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86170028 + 86170029.

It is an arithmetic number, because the mean of its divisors is an integer number (86170029).

Almost surely, 2^172340057 is an apocalyptic number.

It is an amenable number.

172340057 is a deficient number, since it is larger than the sum of its proper divisors (1).

172340057 is an equidigital number, since it uses as much as digits as its factorization.

172340057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 172340057 is about 13127.8351985390. The cubic root of 172340057 is about 556.4960389158.

The spelling of 172340057 in words is "one hundred seventy-two million, three hundred forty thousand, fifty-seven".