145775 has 24 divisors (see below), whose sum is σ = 223200. Its totient is φ = 94080.

The previous prime is 145771. The next prime is 145777. The reversal of 145775 is 577541.

It is not a de Polignac number, because 145775 - 2² = 145771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8567 + ... + 8583.

It is an arithmetic number, because the mean of its divisors is an integer number (9300).

2¹⁴⁵⁷⁷⁵ is an apocalyptic number.

145775 is a deficient number, since it is larger than the sum of its proper divisors (77425).

145775 is an equidigital number, since it uses as much as digits as its factorization.

145775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48 (or 29 counting only the distinct ones).

The product of its digits is 4900, while the sum is 29.

The square root of 145775 is about 381.8049240123. The cubic root of 145775 is about 52.6293108672.

The spelling of 145775 in words is "one hundred forty-five thousand, seven hundred seventy-five".