57147793 has 2 divisors, whose sum is σ = 57147794. Its totient is φ = 57147792.

The previous prime is 57147791. The next prime is 57147823. The reversal of 57147793 is 39774175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45265984 + 11881809 = 6728^2 + 3447^2 .

It is a cyclic number.

It is not a de Polignac number, because 57147793 - 2¹ = 57147791 is a prime.

Together with 57147791, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (57147791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28573896 + 28573897.

It is an arithmetic number, because the mean of its divisors is an integer number (28573897).

Almost surely, 2^57147793 is an apocalyptic number.

It is an amenable number.

57147793 is a deficient number, since it is larger than the sum of its proper divisors (1).

57147793 is an equidigital number, since it uses as much as digits as its factorization.

57147793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 185220, while the sum is 43.

The square root of 57147793 is about 7559.6159293975. The cubic root of 57147793 is about 385.1824468378.

The spelling of 57147793 in words is "fifty-seven million, one hundred forty-seven thousand, seven hundred ninety-three".