172168049 has 4 divisors (see below), whose sum is σ = 172201536. Its totient is φ = 172134564.

The previous prime is 172168019. The next prime is 172168057. The reversal of 172168049 is 940861271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172168049 is a prime.

It is a super-3 number, since 3×172168049³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172168019) 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, 7229 + ... + 19914.

It is an arithmetic number, because the mean of its divisors is an integer number (43050384).

Almost surely, 2^172168049 is an apocalyptic number.

It is an amenable number.

172168049 is a deficient number, since it is larger than the sum of its proper divisors (33487).

172168049 is an equidigital number, since it uses as much as digits as its factorization.

172168049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33486.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 172168049 is about 13121.2822925200. The cubic root of 172168049 is about 556.3108360176.

The spelling of 172168049 in words is "one hundred seventy-two million, one hundred sixty-eight thousand, forty-nine".