57082905 has 24 divisors (see below), whose sum is σ = 107939520. Its totient is φ = 27676320.

The previous prime is 57082901. The next prime is 57082919. The reversal of 57082905 is 50928075.

57082905 is a `hidden beast` number, since 570 + 82 + 9 + 0 + 5 = 666.

It is not a de Polignac number, because 57082905 - 2² = 57082901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57082905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57082901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57165 + ... + 58154.

It is an arithmetic number, because the mean of its divisors is an integer number (4497480).

Almost surely, 2^57082905 is an apocalyptic number.

57082905 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

57082905 is a deficient number, since it is larger than the sum of its proper divisors (50856615).

57082905 is a wasteful number, since it uses less digits than its factorization.

57082905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115341 (or 115338 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 57082905 is about 7555.3229580211. The cubic root of 57082905 is about 385.0366075271.

The spelling of 57082905 in words is "fifty-seven million, eighty-two thousand, nine hundred five".