30057 has 8 divisors (see below), whose sum is σ = 41184. Its totient is φ = 19488.

The previous prime is 30047. The next prime is 30059. The reversal of 30057 is 75003.

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

It is not a de Polignac number, because 30057 - 2¹⁰ = 29033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13 + ... + 245.

It is an arithmetic number, because the mean of its divisors is an integer number (5148).

2³⁰⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

30057 is a deficient number, since it is larger than the sum of its proper divisors (11127).

30057 is a wasteful number, since it uses less digits than its factorization.

30057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279.

The product of its (nonzero) digits is 105, while the sum is 15.

The square root of 30057 is about 173.3695474990. The cubic root of 30057 is about 31.0919917484.

The spelling of 30057 in words is "thirty thousand, fifty-seven".