57238737449 has 2 divisors, whose sum is σ = 57238737450. Its totient is φ = 57238737448.

The previous prime is 57238737383. The next prime is 57238737461. The reversal of 57238737449 is 94473783275.

57238737449 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., 48750432025 + 8488305424 = 220795^2 + 92132^2 .

It is a cyclic number.

It is not a de Polignac number, because 57238737449 - 2³² = 52943770153 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (57238737349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28619368724 + 28619368725.

It is an arithmetic number, because the mean of its divisors is an integer number (28619368725).

Almost surely, 2^57238737449 is an apocalyptic number.

It is an amenable number.

57238737449 is a deficient number, since it is larger than the sum of its proper divisors (1).

57238737449 is an equidigital number, since it uses as much as digits as its factorization.

57238737449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35562240, while the sum is 59.

The spelling of 57238737449 in words is "fifty-seven billion, two hundred thirty-eight million, seven hundred thirty-seven thousand, four hundred forty-nine".