172136533 has 2 divisors, whose sum is σ = 172136534. Its totient is φ = 172136532.

The previous prime is 172136479. The next prime is 172136539. The reversal of 172136533 is 335631271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125596849 + 46539684 = 11207^2 + 6822^2 .

It is a cyclic number.

It is not a de Polignac number, because 172136533 - 2²¹ = 170039381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172136495 and 172136504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172136539) 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 as a sum of consecutive naturals, namely, 86068266 + 86068267.

It is an arithmetic number, because the mean of its divisors is an integer number (86068267).

Almost surely, 2^172136533 is an apocalyptic number.

It is an amenable number.

172136533 is a deficient number, since it is larger than the sum of its proper divisors (1).

172136533 is an equidigital number, since it uses as much as digits as its factorization.

172136533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 31.

The square root of 172136533 is about 13120.0812878579. The cubic root of 172136533 is about 556.2768890255.

The spelling of 172136533 in words is "one hundred seventy-two million, one hundred thirty-six thousand, five hundred thirty-three".