155131104 has 24 divisors (see below), whose sum is σ = 407219400. Its totient is φ = 51710336.

The previous prime is 155131087. The next prime is 155131127. The reversal of 155131104 is 401131551.

It is a happy number.

155131104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 807879 + ... + 808070.

It is an arithmetic number, because the mean of its divisors is an integer number (16967475).

Almost surely, 2^155131104 is an apocalyptic number.

It is an amenable number.

155131104 is an abundant number, since it is smaller than the sum of its proper divisors (252088296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155131104 is a wasteful number, since it uses less digits than its factorization.

155131104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615962 (or 1615954 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 155131104 is about 12455.1637484218. The cubic root of 155131104 is about 537.3199443055.

Adding to 155131104 its reverse (401131551), we get a palindrome (556262655).

The spelling of 155131104 in words is "one hundred fifty-five million, one hundred thirty-one thousand, one hundred four".