172933129 has 4 divisors (see below), whose sum is σ = 183105684. Its totient is φ = 162760576.

The previous prime is 172933127. The next prime is 172933157. The reversal of 172933129 is 921339271.

It is a happy number.

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 128777104 + 44156025 = 11348^2 + 6645^2 .

It is a cyclic number.

It is not a de Polignac number, because 172933129 - 2¹ = 172933127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172933127) 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, 5086252 + ... + 5086285.

It is an arithmetic number, because the mean of its divisors is an integer number (45776421).

Almost surely, 2^172933129 is an apocalyptic number.

It is an amenable number.

172933129 is a deficient number, since it is larger than the sum of its proper divisors (10172555).

172933129 is a wasteful number, since it uses less digits than its factorization.

172933129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10172554.

The product of its digits is 20412, while the sum is 37.

The square root of 172933129 is about 13150.4041382765. The cubic root of 172933129 is about 557.1336626860.

The spelling of 172933129 in words is "one hundred seventy-two million, nine hundred thirty-three thousand, one hundred twenty-nine".