57505223 has 2 divisors, whose sum is σ = 57505224. Its totient is φ = 57505222.

The previous prime is 57505207. The next prime is 57505241. The reversal of 57505223 is 32250575.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57505223 - 2⁴ = 57505207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57505523) 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, 28752611 + 28752612.

It is an arithmetic number, because the mean of its divisors is an integer number (28752612).

Almost surely, 2^57505223 is an apocalyptic number.

57505223 is a deficient number, since it is larger than the sum of its proper divisors (1).

57505223 is an equidigital number, since it uses as much as digits as its factorization.

57505223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10500, while the sum is 29.

The square root of 57505223 is about 7583.2198306524. The cubic root of 57505223 is about 385.9838176791.

Adding to 57505223 its reverse (32250575), we get a palindrome (89755798).

The spelling of 57505223 in words is "fifty-seven million, five hundred five thousand, two hundred twenty-three".