145558 has 16 divisors (see below), whose sum is σ = 257184. Its totient is φ = 60480.

The previous prime is 145549. The next prime is 145577. The reversal of 145558 is 855541.

It is a super-3 number, since 3×145558³ = 9251869401243336, which contains 333 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

145558 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378 + ... + 658.

It is an arithmetic number, because the mean of its divisors is an integer number (16074).

2¹⁴⁵⁵⁵⁸ is an apocalyptic number.

145558 is a deficient number, since it is larger than the sum of its proper divisors (111626).

145558 is a wasteful number, since it uses less digits than its factorization.

145558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327.

The product of its digits is 4000, while the sum is 28.

The square root of 145558 is about 381.5206416434. The cubic root of 145558 is about 52.6031833144.

Subtracting from 145558 its sum of digits (28), we obtain a triangular number (145530 = T₅₃₉).

It can be divided in two parts, 145 and 558, that added together give a triangular number (703 = T₃₇).

The spelling of 145558 in words is "one hundred forty-five thousand, five hundred fifty-eight".