243162001 has 4 divisors (see below), whose sum is σ = 243356400. Its totient is φ = 242967604.

The previous prime is 243161993. The next prime is 243162037. The reversal of 243162001 is 100261342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243162001 - 2³ = 243161993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243162001.

It is not an unprimeable number, because it can be changed into a prime (243162701) 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, 95311 + ... + 97828.

It is an arithmetic number, because the mean of its divisors is an integer number (60839100).

Almost surely, 2^243162001 is an apocalyptic number.

It is an amenable number.

243162001 is a deficient number, since it is larger than the sum of its proper divisors (194399).

243162001 is a wasteful number, since it uses less digits than its factorization.

243162001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194398.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 243162001 is about 15593.6525868701. The cubic root of 243162001 is about 624.1637892214.

The spelling of 243162001 in words is "two hundred forty-three million, one hundred sixty-two thousand, one".