57040549 has 2 divisors, whose sum is σ = 57040550. Its totient is φ = 57040548.

The previous prime is 57040537. The next prime is 57040579. The reversal of 57040549 is 94504075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55130625 + 1909924 = 7425^2 + 1382^2 .

It is a cyclic number.

It is not a de Polignac number, because 57040549 - 2¹⁹ = 56516261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57040579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28520274 + 28520275.

It is an arithmetic number, because the mean of its divisors is an integer number (28520275).

Almost surely, 2^57040549 is an apocalyptic number.

It is an amenable number.

57040549 is a deficient number, since it is larger than the sum of its proper divisors (1).

57040549 is an equidigital number, since it uses as much as digits as its factorization.

57040549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 57040549 is about 7552.5193809748. The cubic root of 57040549 is about 384.9413504858.

The spelling of 57040549 in words is "fifty-seven million, forty thousand, five hundred forty-nine".