243522145 has 16 divisors (see below), whose sum is σ = 307995840. Its totient is φ = 184330944.

The previous prime is 243522133. The next prime is 243522157. The reversal of 243522145 is 541225342.

243522145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (243522133) and next prime (243522157).

It is a cyclic number.

It is not a de Polignac number, because 243522145 - 2⁵ = 243522113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129502 + ... + 131368.

It is an arithmetic number, because the mean of its divisors is an integer number (19249740).

Almost surely, 2^243522145 is an apocalyptic number.

It is an amenable number.

243522145 is a deficient number, since it is larger than the sum of its proper divisors (64473695).

243522145 is a wasteful number, since it uses less digits than its factorization.

243522145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264.

The product of its digits is 9600, while the sum is 28.

The square root of 243522145 is about 15605.1960897645. The cubic root of 243522145 is about 624.4717841065.

Adding to 243522145 its reverse (541225342), we get a palindrome (784747487).

The spelling of 243522145 in words is "two hundred forty-three million, five hundred twenty-two thousand, one hundred forty-five".