57280849 has 4 divisors (see below), whose sum is σ = 57315636. Its totient is φ = 57246064.

The previous prime is 57280843. The next prime is 57280897. The reversal of 57280849 is 94808275.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37638225 + 19642624 = 6135^2 + 4432^2 .

It is a cyclic number.

It is not a de Polignac number, because 57280849 - 2³ = 57280841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57280841) 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 3 ways as a sum of consecutive naturals, for example, 14794 + ... + 18259.

It is an arithmetic number, because the mean of its divisors is an integer number (14328909).

Almost surely, 2^57280849 is an apocalyptic number.

It is an amenable number.

57280849 is a deficient number, since it is larger than the sum of its proper divisors (34787).

57280849 is a wasteful number, since it uses less digits than its factorization.

57280849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34786.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 57280849 is about 7568.4112599673. The cubic root of 57280849 is about 385.4811525207.

The spelling of 57280849 in words is "fifty-seven million, two hundred eighty thousand, eight hundred forty-nine".