172607243 has 4 divisors (see below), whose sum is σ = 172862880. Its totient is φ = 172351608.

The previous prime is 172607233. The next prime is 172607261. The reversal of 172607243 is 342706271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342706271 = 31 ⋅11055041.

It is a cyclic number.

It is not a de Polignac number, because 172607243 - 2¹² = 172603147 is a prime.

It is a super-2 number, since 2×172607243² = 59586520672122098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172607233) 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 3 ways as a sum of consecutive naturals, for example, 126803 + ... + 128156.

It is an arithmetic number, because the mean of its divisors is an integer number (43215720).

Almost surely, 2^172607243 is an apocalyptic number.

172607243 is a deficient number, since it is larger than the sum of its proper divisors (255637).

172607243 is an equidigital number, since it uses as much as digits as its factorization.

172607243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255636.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 172607243 is about 13138.0075734489. The cubic root of 172607243 is about 556.7834767878.

The spelling of 172607243 in words is "one hundred seventy-two million, six hundred seven thousand, two hundred forty-three".