272330561 has 4 divisors (see below), whose sum is σ = 281721300. Its totient is φ = 262939824.

The previous prime is 272330537. The next prime is 272330563. The reversal of 272330561 is 165033272.

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

It can be written as a sum of positive squares in 2 ways, for example, as 214798336 + 57532225 = 14656^2 + 7585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-272330561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 9390709 = 272330561 / (2 + 7 + 2 + 3 + 3 + 0 + 5 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272330563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4695326 + ... + 4695383.

It is an arithmetic number, because the mean of its divisors is an integer number (70430325).

Almost surely, 2^272330561 is an apocalyptic number.

It is an amenable number.

272330561 is a deficient number, since it is larger than the sum of its proper divisors (9390739).

272330561 is an equidigital number, since it uses as much as digits as its factorization.

272330561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9390738.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 272330561 is about 16502.4410618551. The cubic root of 272330561 is about 648.1847268714.

The spelling of 272330561 in words is "two hundred seventy-two million, three hundred thirty thousand, five hundred sixty-one".