145147 has 4 divisors (see below), whose sum is σ = 146160. Its totient is φ = 144136.

The previous prime is 145139. The next prime is 145177. The reversal of 145147 is 741541.

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 a cyclic number.

It is not a de Polignac number, because 145147 - 2³ = 145139 is a prime.

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 145147.

It is not an unprimeable number, because it can be changed into a prime (145177) 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, 247 + ... + 592.

It is an arithmetic number, because the mean of its divisors is an integer number (36540).

2¹⁴⁵¹⁴⁷ is an apocalyptic number.

145147 is a deficient number, since it is larger than the sum of its proper divisors (1013).

145147 is an equidigital number, since it uses as much as digits as its factorization.

145147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012.

The product of its digits is 560, while the sum is 22.

The square root of 145147 is about 380.9816268536. The cubic root of 145147 is about 52.5536262327.

Adding to 145147 its reverse (741541), we get a palindrome (886688).

It can be divided in two parts, 145 and 147, that added together give a palindrome (292).

The spelling of 145147 in words is "one hundred forty-five thousand, one hundred forty-seven".