57002443 has 2 divisors, whose sum is σ = 57002444. Its totient is φ = 57002442.

The previous prime is 57002417. The next prime is 57002501. The reversal of 57002443 is 34420075.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57002443 is a prime.

It is not a weakly prime, because it can be changed into another prime (57000443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28501221 + 28501222.

It is an arithmetic number, because the mean of its divisors is an integer number (28501222).

Almost surely, 2^57002443 is an apocalyptic number.

57002443 is a deficient number, since it is larger than the sum of its proper divisors (1).

57002443 is an equidigital number, since it uses as much as digits as its factorization.

57002443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 57002443 is about 7549.9962251646. The cubic root of 57002443 is about 384.8556112294.

The spelling of 57002443 in words is "fifty-seven million, two thousand, four hundred forty-three".