230721055 has 8 divisors (see below), whose sum is σ = 276980400. Its totient is φ = 184500096.

The previous prime is 230721053. The next prime is 230721061. The reversal of 230721055 is 550127032.

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 230721055 - 2¹ = 230721053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230721053) 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, 5911 + ... + 22279.

It is an arithmetic number, because the mean of its divisors is an integer number (34622550).

Almost surely, 2^230721055 is an apocalyptic number.

230721055 is a deficient number, since it is larger than the sum of its proper divisors (46259345).

230721055 is a wasteful number, since it uses less digits than its factorization.

230721055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19193.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 230721055 is about 15189.5047648039. The cubic root of 230721055 is about 613.3321677737.

Adding to 230721055 its reverse (550127032), we get a palindrome (780848087).

The spelling of 230721055 in words is "two hundred thirty million, seven hundred twenty-one thousand, fifty-five".