57078473 has 4 divisors (see below), whose sum is σ = 57461700. Its totient is φ = 56695248.

The previous prime is 57078443. The next prime is 57078521. The reversal of 57078473 is 37487075.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2274064 + 54804409 = 1508^2 + 7403^2 .

It is a cyclic number.

It is not a de Polignac number, because 57078473 - 2¹² = 57074377 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 57078473.

It is not an unprimeable number, because it can be changed into a prime (57078443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191390 + ... + 191687.

It is an arithmetic number, because the mean of its divisors is an integer number (14365425).

Almost surely, 2^57078473 is an apocalyptic number.

It is an amenable number.

57078473 is a deficient number, since it is larger than the sum of its proper divisors (383227).

57078473 is a wasteful number, since it uses less digits than its factorization.

57078473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383226.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 57078473 is about 7555.0296491807. The cubic root of 57078473 is about 385.0266423346.

The spelling of 57078473 in words is "fifty-seven million, seventy-eight thousand, four hundred seventy-three".