172083427 has 2 divisors, whose sum is σ = 172083428. Its totient is φ = 172083426.

The previous prime is 172083413. The next prime is 172083433. The reversal of 172083427 is 724380271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172083427 is a prime.

It is a super-2 number, since 2×172083427² = 59225411696128658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172083392 and 172083401.

It is not a weakly prime, because it can be changed into another prime (172083407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86041713 + 86041714.

It is an arithmetic number, because the mean of its divisors is an integer number (86041714).

Almost surely, 2^172083427 is an apocalyptic number.

172083427 is a deficient number, since it is larger than the sum of its proper divisors (1).

172083427 is an equidigital number, since it uses as much as digits as its factorization.

172083427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 172083427 is about 13118.0572875712. The cubic root of 172083427 is about 556.2196773102.

The spelling of 172083427 in words is "one hundred seventy-two million, eighty-three thousand, four hundred twenty-seven".