155399168 has 44 divisors (see below), whose sum is σ = 321419940. Its totient is φ = 75005952.

The previous prime is 155399077. The next prime is 155399213. The reversal of 155399168 is 861993551.

155399168 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 122589184 + 32809984 = 11072^2 + 5728^2 .

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, 27080 + ... + 32312.

Almost surely, 2^155399168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155399168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160709970).

155399168 is an abundant number, since it is smaller than the sum of its proper divisors (166020772).

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

155399168 is an equidigital number, since it uses as much as digits as its factorization.

155399168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5282 (or 5264 counting only the distinct ones).

The product of its digits is 291600, while the sum is 47.

The square root of 155399168 is about 12465.9202628607. The cubic root of 155399168 is about 537.6292595564.

The spelling of 155399168 in words is "one hundred fifty-five million, three hundred ninety-nine thousand, one hundred sixty-eight".