157170 has 48 divisors (see below), whose sum is σ = 421632. Its totient is φ = 37440.

The previous prime is 157163. The next prime is 157177. The reversal of 157170 is 71751.

It is an interprime number because it is at equal distance from previous prime (157163) and next prime (157177).

It is not an unprimeable number, because it can be changed into a prime (157177) 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, 5055 + ... + 5085.

It is an arithmetic number, because the mean of its divisors is an integer number (8784).

2¹⁵⁷¹⁷⁰ is an apocalyptic number.

157170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210816).

157170 is an abundant number, since it is smaller than the sum of its proper divisors (264462).

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

157170 is a wasteful number, since it uses less digits than its factorization.

157170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 245, while the sum is 21.

The square root of 157170 is about 396.4467177314. The cubic root of 157170 is about 53.9663713803.

The spelling of 157170 in words is "one hundred fifty-seven thousand, one hundred seventy".