145755 has 24 divisors (see below), whose sum is σ = 262080. Its totient is φ = 74880.

The previous prime is 145753. The next prime is 145757. The reversal of 145755 is 557541.

It is an interprime number because it is at equal distance from previous prime (145753) and next prime (145757).

It is not a de Polignac number, because 145755 - 2¹ = 145753 is a prime.

145755 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145753) 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, 1806 + ... + 1884.

It is an arithmetic number, because the mean of its divisors is an integer number (10920).

2¹⁴⁵⁷⁵⁵ is an apocalyptic number.

145755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145755 is a deficient number, since it is larger than the sum of its proper divisors (116325).

145755 is a wasteful number, since it uses less digits than its factorization.

145755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 128 counting only the distinct ones).

The product of its digits is 3500, while the sum is 27.

The square root of 145755 is about 381.7787317282. The cubic root of 145755 is about 52.6269038830.

It can be divided in two parts, 145 and 755, that added together give a square (900 = 30²).

The spelling of 145755 in words is "one hundred forty-five thousand, seven hundred fifty-five".