30545 has 8 divisors (see below), whose sum is σ = 37800. Its totient is φ = 23680.

The previous prime is 30539. The next prime is 30553. The reversal of 30545 is 54503.

It can be written as a sum of positive squares in 4 ways, for example, as 961 + 29584 = 31^2 + 172^2 .

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

It is not a de Polignac number, because 30545 - 2⁴ = 30529 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a nialpdrome in base 16.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131 + ... + 279.

It is an arithmetic number, because the mean of its divisors is an integer number (4725).

2³⁰⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

30545 is a deficient number, since it is larger than the sum of its proper divisors (7255).

30545 is a wasteful number, since it uses less digits than its factorization.

30545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 30545 is about 174.7712791050. The cubic root of 30545 is about 31.2593571979.

It can be divided in two parts, 30 and 545, that added together give a palindrome (575).

The spelling of 30545 in words is "thirty thousand, five hundred forty-five".