172359427 has 2 divisors, whose sum is σ = 172359428. Its totient is φ = 172359426.

The previous prime is 172359389. The next prime is 172359457. The reversal of 172359427 is 724953271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172359427 - 2¹⁵ = 172326659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172359427.

It is not a weakly prime, because it can be changed into another prime (172359457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86179713 + 86179714.

It is an arithmetic number, because the mean of its divisors is an integer number (86179714).

Almost surely, 2^172359427 is an apocalyptic number.

172359427 is a deficient number, since it is larger than the sum of its proper divisors (1).

172359427 is an equidigital number, since it uses as much as digits as its factorization.

172359427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 40.

The square root of 172359427 is about 13128.5729232084. The cubic root of 172359427 is about 556.5168870859.

It can be divided in two parts, 17235 and 9427, that added together give a palindrome (26662).

The spelling of 172359427 in words is "one hundred seventy-two million, three hundred fifty-nine thousand, four hundred twenty-seven".