272167561 has 8 divisors (see below), whose sum is σ = 280817280. Its totient is φ = 263648112.

The previous prime is 272167549. The next prime is 272167573. The reversal of 272167561 is 165761272.

It is an interprime number because it is at equal distance from previous prime (272167549) and next prime (272167573).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 272167561 - 2¹⁷ = 272036489 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 272167561.

It is not an unprimeable number, because it can be changed into a prime (272167591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28315 + ... + 36688.

It is an arithmetic number, because the mean of its divisors is an integer number (35102160).

Almost surely, 2^272167561 is an apocalyptic number.

It is an amenable number.

272167561 is a deficient number, since it is larger than the sum of its proper divisors (8649719).

272167561 is an equidigital number, since it uses as much as digits as its factorization.

272167561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65135.

The product of its digits is 35280, while the sum is 37.

The square root of 272167561 is about 16497.5016593422. The cubic root of 272167561 is about 648.0553801485.

The spelling of 272167561 in words is "two hundred seventy-two million, one hundred sixty-seven thousand, five hundred sixty-one".