57239653 has 2 divisors, whose sum is σ = 57239654. Its totient is φ = 57239652.

The previous prime is 57239627. The next prime is 57239657. The reversal of 57239653 is 35693275.

57239653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57047809 + 191844 = 7553^2 + 438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57239653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57239657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28619826 + 28619827.

It is an arithmetic number, because the mean of its divisors is an integer number (28619827).

Almost surely, 2^57239653 is an apocalyptic number.

It is an amenable number.

57239653 is a deficient number, since it is larger than the sum of its proper divisors (1).

57239653 is an equidigital number, since it uses as much as digits as its factorization.

57239653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170100, while the sum is 40.

The square root of 57239653 is about 7565.6891953080. The cubic root of 57239653 is about 385.3887185435.

It can be divided in two parts, 5723 and 9653, that added together give a square (15376 = 124²).

The spelling of 57239653 in words is "fifty-seven million, two hundred thirty-nine thousand, six hundred fifty-three".