57126805 has 16 divisors (see below), whose sum is σ = 70178544. Its totient is φ = 44628480.

The previous prime is 57126799. The next prime is 57126821. The reversal of 57126805 is 50862175.

It can be written as a sum of positive squares in 8 ways, for example, as 11847364 + 45279441 = 3442^2 + 6729^2 .

It is not a de Polignac number, because 57126805 - 2¹¹ = 57124757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 47289 + ... + 48481.

It is an arithmetic number, because the mean of its divisors is an integer number (4386159).

Almost surely, 2^57126805 is an apocalyptic number.

It is an amenable number.

57126805 is a deficient number, since it is larger than the sum of its proper divisors (13051739).

57126805 is a wasteful number, since it uses less digits than its factorization.

57126805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 57126805 is about 7558.2276361592. The cubic root of 57126805 is about 385.1352872502.

The spelling of 57126805 in words is "fifty-seven million, one hundred twenty-six thousand, eight hundred five".