145583 has 4 divisors (see below), whose sum is σ = 146520. Its totient is φ = 144648.

The previous prime is 145577. The next prime is 145589. The reversal of 145583 is 385541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (145577) and next prime (145589).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145583 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145589) 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, 173 + ... + 566.

It is an arithmetic number, because the mean of its divisors is an integer number (36630).

2¹⁴⁵⁵⁸³ is an apocalyptic number.

145583 is a deficient number, since it is larger than the sum of its proper divisors (937).

145583 is an equidigital number, since it uses as much as digits as its factorization.

145583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936.

The product of its digits is 2400, while the sum is 26.

The square root of 145583 is about 381.5534038637. The cubic root of 145583 is about 52.6061947241.

The spelling of 145583 in words is "one hundred forty-five thousand, five hundred eighty-three".