172115633 has 4 divisors (see below), whose sum is σ = 182240100. Its totient is φ = 161991168.

The previous prime is 172115617. The next prime is 172115651. The reversal of 172115633 is 336511271.

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

It can be written as a sum of positive squares in 2 ways, for example, as 118635664 + 53479969 = 10892^2 + 7313^2 .

It is a cyclic number.

It is not a de Polignac number, because 172115633 - 2⁴ = 172115617 is a prime.

It is a super-2 number, since 2×172115633² = 59247582245981378, 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 = 172115596 and 172115605.

It is not an unprimeable number, because it can be changed into a prime (172195633) 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, 5062208 + ... + 5062241.

It is an arithmetic number, because the mean of its divisors is an integer number (45560025).

Almost surely, 2^172115633 is an apocalyptic number.

It is an amenable number.

172115633 is a deficient number, since it is larger than the sum of its proper divisors (10124467).

172115633 is a wasteful number, since it uses less digits than its factorization.

172115633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10124466.

The product of its digits is 3780, while the sum is 29.

The square root of 172115633 is about 13119.2847747124. The cubic root of 172115633 is about 556.2543746153.

The spelling of 172115633 in words is "one hundred seventy-two million, one hundred fifteen thousand, six hundred thirty-three".