172676057 has 2 divisors, whose sum is σ = 172676058. Its totient is φ = 172676056.

The previous prime is 172676039. The next prime is 172676059. The reversal of 172676057 is 750676271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91604041 + 81072016 = 9571^2 + 9004^2 .

It is an emirp because it is prime and its reverse (750676271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172676057 - 2⁸ = 172675801 is a prime.

It is a super-2 number, since 2×172676057² = 59634041322134498, which contains 22 as substring.

Together with 172676059, 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 (172676059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86338028 + 86338029.

It is an arithmetic number, because the mean of its divisors is an integer number (86338029).

Almost surely, 2^172676057 is an apocalyptic number.

It is an amenable number.

172676057 is a deficient number, since it is larger than the sum of its proper divisors (1).

172676057 is an equidigital number, since it uses as much as digits as its factorization.

172676057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 172676057 is about 13140.6262027348. The cubic root of 172676057 is about 556.8574586342.

The spelling of 172676057 in words is "one hundred seventy-two million, six hundred seventy-six thousand, fifty-seven".