57016643 has 2 divisors, whose sum is σ = 57016644. Its totient is φ = 57016642.

The previous prime is 57016633. The next prime is 57016651. The reversal of 57016643 is 34661075.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57016643 - 2⁴ = 57016627 is a prime.

It is not a weakly prime, because it can be changed into another prime (57016613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28508321 + 28508322.

It is an arithmetic number, because the mean of its divisors is an integer number (28508322).

Almost surely, 2^57016643 is an apocalyptic number.

57016643 is a deficient number, since it is larger than the sum of its proper divisors (1).

57016643 is an equidigital number, since it uses as much as digits as its factorization.

57016643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 57016643 is about 7550.9365644270. The cubic root of 57016643 is about 384.8875659765.

The spelling of 57016643 in words is "fifty-seven million, sixteen thousand, six hundred forty-three".