243561079 has 6 divisors (see below), whose sum is σ = 251507616. Its totient is φ = 235620180.

The previous prime is 243561077. The next prime is 243561103. The reversal of 243561079 is 970165342.

It is not a de Polignac number, because 243561079 - 2¹ = 243561077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243561077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85492 + ... + 88294.

It is an arithmetic number, because the mean of its divisors is an integer number (41917936).

Almost surely, 2^243561079 is an apocalyptic number.

243561079 is a deficient number, since it is larger than the sum of its proper divisors (7946537).

243561079 is an frugal number, since it uses more digits than its factorization.

243561079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5637 (or 2834 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 243561079 is about 15606.4435090126. The cubic root of 243561079 is about 624.5050622420.

The spelling of 243561079 in words is "two hundred forty-three million, five hundred sixty-one thousand, seventy-nine".