57004481 has 2 divisors, whose sum is σ = 57004482. Its totient is φ = 57004480.

The previous prime is 57004469. The next prime is 57004513. The reversal of 57004481 is 18440075.

57004481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56851600 + 152881 = 7540^2 + 391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57004481 is a prime.

It is a super-2 number, since 2×57004481² = 6499021708158722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (57004421) 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 as a sum of consecutive naturals, namely, 28502240 + 28502241.

It is an arithmetic number, because the mean of its divisors is an integer number (28502241).

Almost surely, 2^57004481 is an apocalyptic number.

It is an amenable number.

57004481 is a deficient number, since it is larger than the sum of its proper divisors (1).

57004481 is an equidigital number, since it uses as much as digits as its factorization.

57004481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 57004481 is about 7550.1311909132. The cubic root of 57004481 is about 384.8601977369.

The spelling of 57004481 in words is "fifty-seven million, four thousand, four hundred eighty-one".