57005243 has 2 divisors, whose sum is σ = 57005244. Its totient is φ = 57005242.

The previous prime is 57005239. The next prime is 57005257. The reversal of 57005243 is 34250075.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57005243 - 2² = 57005239 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (57005203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28502621 + 28502622.

It is an arithmetic number, because the mean of its divisors is an integer number (28502622).

Almost surely, 2^57005243 is an apocalyptic number.

57005243 is a deficient number, since it is larger than the sum of its proper divisors (1).

57005243 is an equidigital number, since it uses as much as digits as its factorization.

57005243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 57005243 is about 7550.1816534438. The cubic root of 57005243 is about 384.8619125855.

The spelling of 57005243 in words is "fifty-seven million, five thousand, two hundred forty-three".