57282839 has 2 divisors, whose sum is σ = 57282840. Its totient is φ = 57282838.

The previous prime is 57282791. The next prime is 57282847. The reversal of 57282839 is 93828275.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57282839 - 2⁸ = 57282583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57282839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57282889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28641419 + 28641420.

It is an arithmetic number, because the mean of its divisors is an integer number (28641420).

Almost surely, 2^57282839 is an apocalyptic number.

57282839 is a deficient number, since it is larger than the sum of its proper divisors (1).

57282839 is an equidigital number, since it uses as much as digits as its factorization.

57282839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The square root of 57282839 is about 7568.5427263113. The cubic root of 57282839 is about 385.4856164828.

The spelling of 57282839 in words is "fifty-seven million, two hundred eighty-two thousand, eight hundred thirty-nine".