261227321 has 8 divisors (see below), whose sum is σ = 276768000. Its totient is φ = 245706048.

The previous prime is 261227303. The next prime is 261227341. The reversal of 261227321 is 123722162.

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 261227321 - 2¹⁰ = 261226297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261227341) 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, 30140 + ... + 37826.

It is an arithmetic number, because the mean of its divisors is an integer number (34596000).

Almost surely, 2^261227321 is an apocalyptic number.

It is an amenable number.

261227321 is a deficient number, since it is larger than the sum of its proper divisors (15540679).

261227321 is a wasteful number, since it uses less digits than its factorization.

261227321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9703.

The product of its digits is 2016, while the sum is 26.

The square root of 261227321 is about 16162.5282985058. The cubic root of 261227321 is about 639.2531334816.

Adding to 261227321 its reverse (123722162), we get a palindrome (384949483).

The spelling of 261227321 in words is "two hundred sixty-one million, two hundred twenty-seven thousand, three hundred twenty-one".