155320101 has 24 divisors (see below), whose sum is σ = 229881600. Its totient is φ = 101009376.

The previous prime is 155320093. The next prime is 155320147. The reversal of 155320101 is 101023551.

It is not a de Polignac number, because 155320101 - 2³ = 155320093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155320001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 253071 + ... + 253683.

It is an arithmetic number, because the mean of its divisors is an integer number (9578400).

Almost surely, 2^155320101 is an apocalyptic number.

It is an amenable number.

155320101 is a deficient number, since it is larger than the sum of its proper divisors (74561499).

155320101 is a wasteful number, since it uses less digits than its factorization.

155320101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 155320101 is about 12462.7485331286. The cubic root of 155320101 is about 537.5380622767.

Adding to 155320101 its reverse (101023551), we get a palindrome (256343652).

The spelling of 155320101 in words is "one hundred fifty-five million, three hundred twenty thousand, one hundred one".