147745 has 8 divisors (see below), whose sum is σ = 191016. Its totient is φ = 109056.

The previous prime is 147743. The next prime is 147761. The reversal of 147745 is 547741.

147745 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 4 ways, for example, as 17424 + 130321 = 132^2 + 361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 147745 - 2¹ = 147743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1072 + ... + 1201.

It is an arithmetic number, because the mean of its divisors is an integer number (23877).

2¹⁴⁷⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

147745 is a deficient number, since it is larger than the sum of its proper divisors (43271).

147745 is a wasteful number, since it uses less digits than its factorization.

147745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291.

The product of its digits is 3920, while the sum is 28.

The square root of 147745 is about 384.3761178846. The cubic root of 147745 is about 52.8653279613.

The spelling of 147745 in words is "one hundred forty-seven thousand, seven hundred forty-five".