57782273 has 2 divisors, whose sum is σ = 57782274. Its totient is φ = 57782272.

The previous prime is 57782261. The next prime is 57782321. The reversal of 57782273 is 37228775.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54656449 + 3125824 = 7393^2 + 1768^2 .

It is a cyclic number.

It is not a de Polignac number, because 57782273 - 2⁶ = 57782209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57782273.

It is not a weakly prime, because it can be changed into another prime (57782203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28891136 + 28891137.

It is an arithmetic number, because the mean of its divisors is an integer number (28891137).

Almost surely, 2^57782273 is an apocalyptic number.

It is an amenable number.

57782273 is a deficient number, since it is larger than the sum of its proper divisors (1).

57782273 is an equidigital number, since it uses as much as digits as its factorization.

57782273 is an evil number, because the sum of its binary digits is even.

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

The square root of 57782273 is about 7601.4651877122. The cubic root of 57782273 is about 386.6026921342.

The spelling of 57782273 in words is "fifty-seven million, seven hundred eighty-two thousand, two hundred seventy-three".