272802161 has 4 divisors (see below), whose sum is σ = 272907492. Its totient is φ = 272696832.

The previous prime is 272802157. The next prime is 272802169. The reversal of 272802161 is 161208272.

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 199374400 + 73427761 = 14120^2 + 8569^2 .

It is a cyclic number.

It is not a de Polignac number, because 272802161 - 2² = 272802157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272802169) 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, 48680 + ... + 53993.

It is an arithmetic number, because the mean of its divisors is an integer number (68226873).

Almost surely, 2^272802161 is an apocalyptic number.

It is an amenable number.

272802161 is a deficient number, since it is larger than the sum of its proper divisors (105331).

272802161 is a wasteful number, since it uses less digits than its factorization.

272802161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105330.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 272802161 is about 16516.7236763227. The cubic root of 272802161 is about 648.5586690304.

The spelling of 272802161 in words is "two hundred seventy-two million, eight hundred two thousand, one hundred sixty-one".