155170158 has 96 divisors (see below), whose sum is σ = 377256096. Its totient is φ = 42240000.

The previous prime is 155170151. The next prime is 155170201. The reversal of 155170158 is 851071551.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155170151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 386758 + ... + 387158.

It is an arithmetic number, because the mean of its divisors is an integer number (3929751).

Almost surely, 2^155170158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155170158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188628048).

155170158 is an abundant number, since it is smaller than the sum of its proper divisors (222085938).

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

155170158 is a wasteful number, since it uses less digits than its factorization.

155170158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 33.

The square root of 155170158 is about 12456.7314332452. The cubic root of 155170158 is about 537.3650303260.

The spelling of 155170158 in words is "one hundred fifty-five million, one hundred seventy thousand, one hundred fifty-eight".