155801105 has 16 divisors (see below), whose sum is σ = 189518400. Its totient is φ = 122948928.

The previous prime is 155801101. The next prime is 155801119. The reversal of 155801105 is 501108551.

It is a cyclic number.

It is not a de Polignac number, because 155801105 - 2² = 155801101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155801101) 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 15 ways as a sum of consecutive naturals, for example, 120794 + ... + 122076.

It is an arithmetic number, because the mean of its divisors is an integer number (11844900).

Almost surely, 2^155801105 is an apocalyptic number.

It is an amenable number.

155801105 is a deficient number, since it is larger than the sum of its proper divisors (33717295).

155801105 is a wasteful number, since it uses less digits than its factorization.

155801105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600.

The product of its (nonzero) digits is 1000, while the sum is 26.

The square root of 155801105 is about 12482.0312850113. The cubic root of 155801105 is about 538.0923831257.

Adding to 155801105 its reverse (501108551), we get a palindrome (656909656).

The spelling of 155801105 in words is "one hundred fifty-five million, eight hundred one thousand, one hundred five".