145947 has 4 divisors (see below), whose sum is σ = 194600. Its totient is φ = 97296.

The previous prime is 145933. The next prime is 145949. The reversal of 145947 is 749541.

It is a happy number.

145947 is nontrivially palindromic in base 6.

145947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 145947 - 2⁴ = 145931 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145947.

It is not an unprimeable number, because it can be changed into a prime (145949) 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, 24322 + ... + 24327.

It is an arithmetic number, because the mean of its divisors is an integer number (48650).

2¹⁴⁵⁹⁴⁷ is an apocalyptic number.

145947 is a deficient number, since it is larger than the sum of its proper divisors (48653).

145947 is an equidigital number, since it uses as much as digits as its factorization.

145947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48652.

The product of its digits is 5040, while the sum is 30.

The square root of 145947 is about 382.0301035259. The cubic root of 145947 is about 52.6500018488.

The spelling of 145947 in words is "one hundred forty-five thousand, nine hundred forty-seven".