30857051 has 16 divisors (see below), whose sum is σ = 32901120. Its totient is φ = 28902720.

The previous prime is 30857039. The next prime is 30857069. The reversal of 30857051 is 15075803.

It is a cyclic number.

It is not a de Polignac number, because 30857051 - 2²² = 26662747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30857081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128990 + ... + 129228.

It is an arithmetic number, because the mean of its divisors is an integer number (2056320).

Almost surely, 2^30857051 is an apocalyptic number.

30857051 is a deficient number, since it is larger than the sum of its proper divisors (2044069).

30857051 is a wasteful number, since it uses less digits than its factorization.

30857051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 30857051 is about 5554.9123305413. The cubic root of 30857051 is about 313.6544639099.

The spelling of 30857051 in words is "thirty million, eight hundred fifty-seven thousand, fifty-one".