145170 has 24 divisors (see below), whose sum is σ = 377676. Its totient is φ = 38688.

The previous prime is 145139. The next prime is 145177. The reversal of 145170 is 71541.

It can be written as a sum of positive squares in 2 ways, for example, as 145161 + 9 = 381^2 + 3^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (145177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 717 + ... + 896.

2¹⁴⁵¹⁷⁰ is an apocalyptic number.

145170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145170 is an abundant number, since it is smaller than the sum of its proper divisors (232506).

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

145170 is a wasteful number, since it uses less digits than its factorization.

145170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 145170 is about 381.0118108406. The cubic root of 145170 is about 52.5564019694.

It can be divided in two parts, 1451 and 70, that added together give a square (1521 = 39²).

The spelling of 145170 in words is "one hundred forty-five thousand, one hundred seventy".