30755 has 4 divisors (see below), whose sum is σ = 36912. Its totient is φ = 24600.

The previous prime is 30727. The next prime is 30757. The reversal of 30755 is 55703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55703 = 53 ⋅1051.

It is a de Polignac number, because none of the positive numbers 2^k-30755 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30757) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3071 + ... + 3080.

It is an arithmetic number, because the mean of its divisors is an integer number (9228).

2³⁰⁷⁵⁵ is an apocalyptic number.

30755 is a deficient number, since it is larger than the sum of its proper divisors (6157).

30755 is an equidigital number, since it uses as much as digits as its factorization.

30755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6156.

The product of its (nonzero) digits is 525, while the sum is 20.

The square root of 30755 is about 175.3710352367. The cubic root of 30755 is about 31.3308307442.

The spelling of 30755 in words is "thirty thousand, seven hundred fifty-five".