172057373 has 2 divisors, whose sum is σ = 172057374. Its totient is φ = 172057372.

The previous prime is 172057367. The next prime is 172057387. The reversal of 172057373 is 373750271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156675289 + 15382084 = 12517^2 + 3922^2 .

It is a cyclic number.

It is not a de Polignac number, because 172057373 - 2⁸ = 172057117 is a prime.

It is a super-2 number, since 2×172057373² = 59207479207322258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172957373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86028686 + 86028687.

It is an arithmetic number, because the mean of its divisors is an integer number (86028687).

Almost surely, 2^172057373 is an apocalyptic number.

It is an amenable number.

172057373 is a deficient number, since it is larger than the sum of its proper divisors (1).

172057373 is an equidigital number, since it uses as much as digits as its factorization.

172057373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30870, while the sum is 35.

The square root of 172057373 is about 13117.0641913501. The cubic root of 172057373 is about 556.1916047271.

The spelling of 172057373 in words is "one hundred seventy-two million, fifty-seven thousand, three hundred seventy-three".