172357039 has 2 divisors, whose sum is σ = 172357040. Its totient is φ = 172357038.

The previous prime is 172356997. The next prime is 172357049. The reversal of 172357039 is 930753271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172357039 - 2¹⁷ = 172225967 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 172356989 and 172357007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172357049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86178519 + 86178520.

It is an arithmetic number, because the mean of its divisors is an integer number (86178520).

Almost surely, 2^172357039 is an apocalyptic number.

172357039 is a deficient number, since it is larger than the sum of its proper divisors (1).

172357039 is an equidigital number, since it uses as much as digits as its factorization.

172357039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 172357039 is about 13128.4819762225. The cubic root of 172357039 is about 556.5143169365.

The spelling of 172357039 in words is "one hundred seventy-two million, three hundred fifty-seven thousand, thirty-nine".