57523921057 has 2 divisors, whose sum is σ = 57523921058. Its totient is φ = 57523921056.

The previous prime is 57523921043. The next prime is 57523921061. The reversal of 57523921057 is 75012932575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55996596496 + 1527324561 = 236636^2 + 39081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57523921057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57523920998 and 57523921016.

It is not a weakly prime, because it can be changed into another prime (57523921097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28761960528 + 28761960529.

It is an arithmetic number, because the mean of its divisors is an integer number (28761960529).

Almost surely, 2^57523921057 is an apocalyptic number.

It is an amenable number.

57523921057 is a deficient number, since it is larger than the sum of its proper divisors (1).

57523921057 is an equidigital number, since it uses as much as digits as its factorization.

57523921057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 661500, while the sum is 46.

The spelling of 57523921057 in words is "fifty-seven billion, five hundred twenty-three million, nine hundred twenty-one thousand, fifty-seven".