172075539 has 4 divisors (see below), whose sum is σ = 229434056. Its totient is φ = 114717024.

The previous prime is 172075469. The next prime is 172075543. The reversal of 172075539 is 935570271.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 172075539 - 2²¹ = 169978387 is a prime.

It is a super-2 number, since 2×172075539² = 59219982244281042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172075497 and 172075506.

It is not an unprimeable number, because it can be changed into a prime (172075559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28679254 + ... + 28679259.

It is an arithmetic number, because the mean of its divisors is an integer number (57358514).

Almost surely, 2^172075539 is an apocalyptic number.

172075539 is a deficient number, since it is larger than the sum of its proper divisors (57358517).

172075539 is an equidigital number, since it uses as much as digits as its factorization.

172075539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57358516.

The product of its (nonzero) digits is 66150, while the sum is 39.

The square root of 172075539 is about 13117.7566298510. The cubic root of 172075539 is about 556.2111784715.

The spelling of 172075539 in words is "one hundred seventy-two million, seventy-five thousand, five hundred thirty-nine".