103445 has 8 divisors (see below), whose sum is σ = 131544. Its totient is φ = 77824.

The previous prime is 103423. The next prime is 103451. The reversal of 103445 is 544301.

It can be written as a sum of positive squares in 4 ways, for example, as 14641 + 88804 = 121^2 + 298^2 .

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 103445 - 2¹² = 99349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524 + ... + 693.

It is an arithmetic number, because the mean of its divisors is an integer number (16443).

2¹⁰³⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

103445 is a deficient number, since it is larger than the sum of its proper divisors (28099).

103445 is a wasteful number, since it uses less digits than its factorization.

103445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 103445 is about 321.6286678765. The cubic root of 103445 is about 46.9428912521.

Adding to 103445 its reverse (544301), we get a palindrome (647746).

The spelling of 103445 in words is "one hundred three thousand, four hundred forty-five".