172079 has 2 divisors, whose sum is σ = 172080.
Its totient is φ = 172078.
The previous prime is 172069. The next prime is 172093. The reversal of 172079 is 970271.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 172079 - 28 = 171823 is a prime.
It is a super-2 number, since 2×1720792 = 59222364482, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (172009) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86039 + 86040.
It is an arithmetic number, because the mean of its divisors is an integer number (86040).
2172079 is an apocalyptic number.
172079 is a deficient number, since it is larger than the sum of its proper divisors (1).
172079 is an equidigital number, since it uses as much as digits as its factorization.
172079 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 882, while the sum is 26.
The square root of 172079 is about 414.8240590901.
The cubic root of 172079 is about 55.6214907520.
The spelling of 172079 in words is "one hundred seventy-two thousand, seventy-nine".