145567 has 4 divisors (see below), whose sum is σ = 151920. Its totient is φ = 139216.

The previous prime is 145549. The next prime is 145577. The reversal of 145567 is 765541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 765541 = 7 ⋅109363.

It is a cyclic number.

It is not a de Polignac number, because 145567 - 2¹¹ = 143519 is a prime.

It is a Duffinian number.

145567 is a lucky number.

It is a plaindrome in base 10 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3142 + ... + 3187.

It is an arithmetic number, because the mean of its divisors is an integer number (37980).

2¹⁴⁵⁵⁶⁷ is an apocalyptic number.

145567 is a deficient number, since it is larger than the sum of its proper divisors (6353).

145567 is an equidigital number, since it uses as much as digits as its factorization.

145567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6352.

The product of its digits is 4200, while the sum is 28.

The square root of 145567 is about 381.5324363668. The cubic root of 145567 is about 52.6042674616.

It can be divided in two parts, 145 and 567, that multiplied together give a triangular number (82215 = T₄₀₅).

The spelling of 145567 in words is "one hundred forty-five thousand, five hundred sixty-seven".