182172147 has 4 divisors (see below), whose sum is σ = 242896200. Its totient is φ = 121448096.

The previous prime is 182172131. The next prime is 182172161. The reversal of 182172147 is 741271281.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 182172147 - 2⁴ = 182172131 is a prime.

It is a super-2 number, since 2×182172147² = 66373382285179218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (182172197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30362022 + ... + 30362027.

It is an arithmetic number, because the mean of its divisors is an integer number (60724050).

Almost surely, 2^182172147 is an apocalyptic number.

182172147 is a deficient number, since it is larger than the sum of its proper divisors (60724053).

182172147 is an equidigital number, since it uses as much as digits as its factorization.

182172147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60724052.

The product of its digits is 6272, while the sum is 33.

The square root of 182172147 is about 13497.1162475545. The cubic root of 182172147 is about 566.8837295688.

The spelling of 182172147 in words is "one hundred eighty-two million, one hundred seventy-two thousand, one hundred forty-seven".