57784057 has 2 divisors, whose sum is σ = 57784058. Its totient is φ = 57784056.

The previous prime is 57784043. The next prime is 57784079. The reversal of 57784057 is 75048775.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33419961 + 24364096 = 5781^2 + 4936^2 .

It is a cyclic number.

It is not a de Polignac number, because 57784057 - 2¹¹ = 57782009 is a prime.

It is not a weakly prime, because it can be changed into another prime (57784087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28892028 + 28892029.

It is an arithmetic number, because the mean of its divisors is an integer number (28892029).

Almost surely, 2^57784057 is an apocalyptic number.

It is an amenable number.

57784057 is a deficient number, since it is larger than the sum of its proper divisors (1).

57784057 is an equidigital number, since it uses as much as digits as its factorization.

57784057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 274400, while the sum is 43.

The square root of 57784057 is about 7601.5825326046. The cubic root of 57784057 is about 386.6066708176.

The spelling of 57784057 in words is "fifty-seven million, seven hundred eighty-four thousand, fifty-seven".