57550243 has 2 divisors, whose sum is σ = 57550244. Its totient is φ = 57550242.

The previous prime is 57550237. The next prime is 57550261. The reversal of 57550243 is 34205575.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57550243 is a prime.

It is not a weakly prime, because it can be changed into another prime (57550223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28775121 + 28775122.

It is an arithmetic number, because the mean of its divisors is an integer number (28775122).

Almost surely, 2^57550243 is an apocalyptic number.

57550243 is a deficient number, since it is larger than the sum of its proper divisors (1).

57550243 is an equidigital number, since it uses as much as digits as its factorization.

57550243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 57550243 is about 7586.1876459787. The cubic root of 57550243 is about 386.0845184376.

The spelling of 57550243 in words is "fifty-seven million, five hundred fifty thousand, two hundred forty-three".