57531464321 has 2 divisors, whose sum is σ = 57531464322. Its totient is φ = 57531464320.

The previous prime is 57531464303. The next prime is 57531464351. The reversal of 57531464321 is 12346413575.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54120904321 + 3410560000 = 232639^2 + 58400^2 .

It is a cyclic number.

It is not a de Polignac number, because 57531464321 - 2¹⁸ = 57531202177 is a prime.

It is not a weakly prime, because it can be changed into another prime (57531464351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28765732160 + 28765732161.

It is an arithmetic number, because the mean of its divisors is an integer number (28765732161).

Almost surely, 2^57531464321 is an apocalyptic number.

It is an amenable number.

57531464321 is a deficient number, since it is larger than the sum of its proper divisors (1).

57531464321 is an equidigital number, since it uses as much as digits as its factorization.

57531464321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 41.

Adding to 57531464321 its reverse (12346413575), we get a palindrome (69877877896).

The spelling of 57531464321 in words is "fifty-seven billion, five hundred thirty-one million, four hundred sixty-four thousand, three hundred twenty-one".