172345756057 has 2 divisors, whose sum is σ = 172345756058. Its totient is φ = 172345756056.

The previous prime is 172345756049. The next prime is 172345756091. The reversal of 172345756057 is 750657543271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142132016016 + 30213740041 = 377004^2 + 173821^2 .

It is a cyclic number.

It is not a de Polignac number, because 172345756057 - 2³ = 172345756049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172345755995 and 172345756013.

It is not a weakly prime, because it can be changed into another prime (172345756007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86172878028 + 86172878029.

It is an arithmetic number, because the mean of its divisors is an integer number (86172878029).

Almost surely, 2^172345756057 is an apocalyptic number.

It is an amenable number.

172345756057 is a deficient number, since it is larger than the sum of its proper divisors (1).

172345756057 is an equidigital number, since it uses as much as digits as its factorization.

172345756057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6174000, while the sum is 52.

The spelling of 172345756057 in words is "one hundred seventy-two billion, three hundred forty-five million, seven hundred fifty-six thousand, fifty-seven".