57642773 has 2 divisors, whose sum is σ = 57642774. Its totient is φ = 57642772.

The previous prime is 57642763. The next prime is 57642799. The reversal of 57642773 is 37724675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55011889 + 2630884 = 7417^2 + 1622^2 .

It is a cyclic number.

It is not a de Polignac number, because 57642773 - 2⁴ = 57642757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57642773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57642703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28821386 + 28821387.

It is an arithmetic number, because the mean of its divisors is an integer number (28821387).

Almost surely, 2^57642773 is an apocalyptic number.

It is an amenable number.

57642773 is a deficient number, since it is larger than the sum of its proper divisors (1).

57642773 is an equidigital number, since it uses as much as digits as its factorization.

57642773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 41.

The square root of 57642773 is about 7592.2837802601. The cubic root of 57642773 is about 386.2913248133.

The spelling of 57642773 in words is "fifty-seven million, six hundred forty-two thousand, seven hundred seventy-three".