2172565067 has 4 divisors (see below), whose sum is σ = 2223089880. Its totient is φ = 2122040256.

The previous prime is 2172565063. The next prime is 2172565069. The reversal of 2172565067 is 7605652712.

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 2172565067 - 2² = 2172565063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2172565061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25262342 + ... + 25262427.

It is an arithmetic number, because the mean of its divisors is an integer number (555772470).

Almost surely, 2^2172565067 is an apocalyptic number.

2172565067 is a deficient number, since it is larger than the sum of its proper divisors (50524813).

2172565067 is an equidigital number, since it uses as much as digits as its factorization.

2172565067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50524812.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 2172565067 is about 46610.7827331831. The cubic root of 2172565067 is about 1295.1625078929.

The spelling of 2172565067 in words is "two billion, one hundred seventy-two million, five hundred sixty-five thousand, sixty-seven".