57073861 has 8 divisors (see below), whose sum is σ = 61722584. Its totient is φ = 52462080.

The previous prime is 57073859. The next prime is 57073867. The reversal of 57073861 is 16837075.

57073861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1943236 + 55130625 = 1394^2 + 7425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57073861 - 2¹ = 57073859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57073861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57073867) 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 in 7 ways as a sum of consecutive naturals, for example, 5976 + ... + 12241.

It is an arithmetic number, because the mean of its divisors is an integer number (7715323).

Almost surely, 2^57073861 is an apocalyptic number.

It is an amenable number.

57073861 is a deficient number, since it is larger than the sum of its proper divisors (4648723).

57073861 is a wasteful number, since it uses less digits than its factorization.

57073861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18471.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 57073861 is about 7554.7244158871. The cubic root of 57073861 is about 385.0162718709.

The spelling of 57073861 in words is "fifty-seven million, seventy-three thousand, eight hundred sixty-one".