57043817 has 2 divisors, whose sum is σ = 57043818. Its totient is φ = 57043816.

The previous prime is 57043807. The next prime is 57043829. The reversal of 57043817 is 71834075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38887696 + 18156121 = 6236^2 + 4261^2 .

It is a cyclic number.

It is not a de Polignac number, because 57043817 - 2⁸ = 57043561 is a prime.

It is not a weakly prime, because it can be changed into another prime (57043807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28521908 + 28521909.

It is an arithmetic number, because the mean of its divisors is an integer number (28521909).

Almost surely, 2^57043817 is an apocalyptic number.

It is an amenable number.

57043817 is a deficient number, since it is larger than the sum of its proper divisors (1).

57043817 is an equidigital number, since it uses as much as digits as its factorization.

57043817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 57043817 is about 7552.7357295221. The cubic root of 57043817 is about 384.9487017726.

The spelling of 57043817 in words is "fifty-seven million, forty-three thousand, eight hundred seventeen".