172297653 has 16 divisors (see below), whose sum is σ = 251374656. Its totient is φ = 104106240.

The previous prime is 172297651. The next prime is 172297663. The reversal of 172297653 is 356792271.

It is not a de Polignac number, because 172297653 - 2¹ = 172297651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172297651) 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 15 ways as a sum of consecutive naturals, for example, 3375 + ... + 18867.

It is an arithmetic number, because the mean of its divisors is an integer number (15710916).

Almost surely, 2^172297653 is an apocalyptic number.

It is an amenable number.

172297653 is a deficient number, since it is larger than the sum of its proper divisors (79077003).

172297653 is a wasteful number, since it uses less digits than its factorization.

172297653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15844.

The product of its digits is 158760, while the sum is 42.

The square root of 172297653 is about 13126.2200575794. The cubic root of 172297653 is about 556.4503935136.

The spelling of 172297653 in words is "one hundred seventy-two million, two hundred ninety-seven thousand, six hundred fifty-three".