155330243 has 8 divisors (see below), whose sum is σ = 160928640. Its totient is φ = 149768640.

The previous prime is 155330239. The next prime is 155330261. The reversal of 155330243 is 342033551.

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 155330243 - 2² = 155330239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155330213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458 + ... + 17631.

It is an arithmetic number, because the mean of its divisors is an integer number (20116080).

Almost surely, 2^155330243 is an apocalyptic number.

155330243 is a deficient number, since it is larger than the sum of its proper divisors (5598397).

155330243 is a wasteful number, since it uses less digits than its factorization.

155330243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18397.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 155330243 is about 12463.1554190743. The cubic root of 155330243 is about 537.5497619694.

Adding to 155330243 its reverse (342033551), we get a palindrome (497363794).

The spelling of 155330243 in words is "one hundred fifty-five million, three hundred thirty thousand, two hundred forty-three".