30057255 has 24 divisors (see below), whose sum is σ = 52986960. Its totient is φ = 15757440.

The previous prime is 30057199. The next prime is 30057257. The reversal of 30057255 is 55275003.

It is not a de Polignac number, because 30057255 - 2⁷ = 30057127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30057257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3006 + ... + 8315.

It is an arithmetic number, because the mean of its divisors is an integer number (2207790).

Almost surely, 2^30057255 is an apocalyptic number.

30057255 is a deficient number, since it is larger than the sum of its proper divisors (22929705).

30057255 is a wasteful number, since it uses less digits than its factorization.

30057255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11391 (or 11388 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 30057255 is about 5482.4497261717. The cubic root of 30057255 is about 310.9207967509.

The spelling of 30057255 in words is "thirty million, fifty-seven thousand, two hundred fifty-five".