273972561 has 8 divisors (see below), whose sum is σ = 386784864. Its totient is φ = 171904320.

The previous prime is 273972557. The next prime is 273972563. The reversal of 273972561 is 165279372.

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

It is not a de Polignac number, because 273972561 - 2² = 273972557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (273972563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2685955 + ... + 2686056.

It is an arithmetic number, because the mean of its divisors is an integer number (48348108).

Almost surely, 2^273972561 is an apocalyptic number.

It is an amenable number.

273972561 is a deficient number, since it is larger than the sum of its proper divisors (112812303).

273972561 is a wasteful number, since it uses less digits than its factorization.

273972561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372031.

The product of its digits is 158760, while the sum is 42.

The square root of 273972561 is about 16552.1165111897. The cubic root of 273972561 is about 649.4848470538.

The spelling of 273972561 in words is "two hundred seventy-three million, nine hundred seventy-two thousand, five hundred sixty-one".