172115333 has 4 divisors (see below), whose sum is σ = 185354988. Its totient is φ = 158875680.

The previous prime is 172115329. The next prime is 172115351. The reversal of 172115333 is 333511271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 333511271 = 127 ⋅2626073.

It can be written as a sum of positive squares in 2 ways, for example, as 19518724 + 152596609 = 4418^2 + 12353^2 .

It is a cyclic number.

It is not a de Polignac number, because 172115333 - 2² = 172115329 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172115323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6619808 + ... + 6619833.

It is an arithmetic number, because the mean of its divisors is an integer number (46338747).

Almost surely, 2^172115333 is an apocalyptic number.

172115333 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

172115333 is a deficient number, since it is larger than the sum of its proper divisors (13239655).

172115333 is a wasteful number, since it uses less digits than its factorization.

172115333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13239654.

The product of its digits is 1890, while the sum is 26.

The square root of 172115333 is about 13119.2733411573. The cubic root of 172115333 is about 556.2540514286.

The spelling of 172115333 in words is "one hundred seventy-two million, one hundred fifteen thousand, three hundred thirty-three".