155203241 has 8 divisors (see below), whose sum is σ = 162476160. Its totient is φ = 147974112.

The previous prime is 155203219. The next prime is 155203253. The reversal of 155203241 is 142302551.

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 155203241 - 2²² = 151008937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155206241) 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, 3581 + ... + 17978.

It is an arithmetic number, because the mean of its divisors is an integer number (20309520).

Almost surely, 2^155203241 is an apocalyptic number.

It is an amenable number.

155203241 is a deficient number, since it is larger than the sum of its proper divisors (7272919).

155203241 is a wasteful number, since it uses less digits than its factorization.

155203241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21895.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 155203241 is about 12458.0592790370. The cubic root of 155203241 is about 537.4032171875.

Adding to 155203241 its reverse (142302551), we get a palindrome (297505792).

The spelling of 155203241 in words is "one hundred fifty-five million, two hundred three thousand, two hundred forty-one".