30000057 has 4 divisors (see below), whose sum is σ = 40000080. Its totient is φ = 20000036.

The previous prime is 30000049. The next prime is 30000059. The reversal of 30000057 is 75000003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30000057 - 2³ = 30000049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30000059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5000007 + ... + 5000012.

It is an arithmetic number, because the mean of its divisors is an integer number (10000020).

Almost surely, 2^30000057 is an apocalyptic number.

It is an amenable number.

30000057 is a deficient number, since it is larger than the sum of its proper divisors (10000023).

30000057 is a wasteful number, since it uses less digits than its factorization.

30000057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000022.

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

The square root of 30000057 is about 5477.2307784135. The cubic root of 30000057 is about 310.7234473867.

The spelling of 30000057 in words is "thirty million, fifty-seven", and thus it is an aban number and an uban number.