172365213 has 8 divisors (see below), whose sum is σ = 229969728. Its totient is φ = 114835424.

The previous prime is 172365211. The next prime is 172365229. The reversal of 172365213 is 312563271.

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 172365213 - 2¹ = 172365211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172365211) 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, 13056 + ... + 22697.

It is an arithmetic number, because the mean of its divisors is an integer number (28746216).

Almost surely, 2^172365213 is an apocalyptic number.

It is an amenable number.

172365213 is a deficient number, since it is larger than the sum of its proper divisors (57604515).

172365213 is a wasteful number, since it uses less digits than its factorization.

172365213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37363.

The product of its digits is 7560, while the sum is 30.

The square root of 172365213 is about 13128.7932804199. The cubic root of 172365213 is about 556.5231143262.

It can be divided in two parts, 172365 and 213, that added together give a triangular number (172578 = T₅₈₇).

The spelling of 172365213 in words is "one hundred seventy-two million, three hundred sixty-five thousand, two hundred thirteen".