57138021053 has 2 divisors, whose sum is σ = 57138021054. Its totient is φ = 57138021052.

The previous prime is 57138021049. The next prime is 57138021077. The reversal of 57138021053 is 35012083175.

57138021053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55092539524 + 2045481529 = 234718^2 + 45227^2 .

It is a cyclic number.

It is not a de Polignac number, because 57138021053 - 2² = 57138021049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57138021013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28569010526 + 28569010527.

It is an arithmetic number, because the mean of its divisors is an integer number (28569010527).

Almost surely, 2^57138021053 is an apocalyptic number.

It is an amenable number.

57138021053 is a deficient number, since it is larger than the sum of its proper divisors (1).

57138021053 is an equidigital number, since it uses as much as digits as its factorization.

57138021053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 57138021053 in words is "fifty-seven billion, one hundred thirty-eight million, twenty-one thousand, fifty-three".