57390329 has 2 divisors, whose sum is σ = 57390330. Its totient is φ = 57390328.

The previous prime is 57390323. The next prime is 57390373. The reversal of 57390329 is 92309375.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57350329 + 40000 = 7573^2 + 200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57390329 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 57390292 and 57390301.

It is not a weakly prime, because it can be changed into another prime (57390323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28695164 + 28695165.

It is an arithmetic number, because the mean of its divisors is an integer number (28695165).

Almost surely, 2^57390329 is an apocalyptic number.

It is an amenable number.

57390329 is a deficient number, since it is larger than the sum of its proper divisors (1).

57390329 is an equidigital number, since it uses as much as digits as its factorization.

57390329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 57390329 is about 7575.6405009742. The cubic root of 57390329 is about 385.7265842770.

The spelling of 57390329 in words is "fifty-seven million, three hundred ninety thousand, three hundred twenty-nine".