172273513 has 16 divisors (see below), whose sum is σ = 186661440. Its totient is φ = 158457600.

The previous prime is 172273511. The next prime is 172273547. The reversal of 172273513 is 315372271.

172273513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 172273513 - 2¹ = 172273511 is a prime.

It is a super-2 number, since 2×172273513² = 59356326562722338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172273511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218506 + ... + 219292.

It is an arithmetic number, because the mean of its divisors is an integer number (11666340).

Almost surely, 2^172273513 is an apocalyptic number.

It is an amenable number.

172273513 is a deficient number, since it is larger than the sum of its proper divisors (14387927).

172273513 is a wasteful number, since it uses less digits than its factorization.

172273513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128.

The product of its digits is 8820, while the sum is 31.

The square root of 172273513 is about 13125.3004917983. The cubic root of 172273513 is about 556.4244048835.

The spelling of 172273513 in words is "one hundred seventy-two million, two hundred seventy-three thousand, five hundred thirteen".