172213049 has 8 divisors (see below), whose sum is σ = 179089920. Its totient is φ = 165398800.

The previous prime is 172213033. The next prime is 172213061. The reversal of 172213049 is 940312271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172213049 - 2⁴ = 172213033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172213849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10007 + ... + 21084.

It is an arithmetic number, because the mean of its divisors is an integer number (22386240).

Almost surely, 2^172213049 is an apocalyptic number.

It is an amenable number.

172213049 is a deficient number, since it is larger than the sum of its proper divisors (6876871).

172213049 is a wasteful number, since it uses less digits than its factorization.

172213049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31311.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 172213049 is about 13122.9969519161. The cubic root of 172213049 is about 556.3592999206.

The spelling of 172213049 in words is "one hundred seventy-two million, two hundred thirteen thousand, forty-nine".