57487278481 has 2 divisors, whose sum is σ = 57487278482. Its totient is φ = 57487278480.

The previous prime is 57487278439. The next prime is 57487278529. The reversal of 57487278481 is 18487278475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40757149456 + 16730129025 = 201884^2 + 129345^2 .

It is a cyclic number.

It is not a de Polignac number, because 57487278481 - 2²¹ = 57485181329 is a prime.

It is a super-2 number, since 2×57487278481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57487272481) 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, 28743639240 + 28743639241.

It is an arithmetic number, because the mean of its divisors is an integer number (28743639241).

Almost surely, 2^57487278481 is an apocalyptic number.

It is an amenable number.

57487278481 is a deficient number, since it is larger than the sum of its proper divisors (1).

57487278481 is an equidigital number, since it uses as much as digits as its factorization.

57487278481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28098560, while the sum is 61.

The spelling of 57487278481 in words is "fifty-seven billion, four hundred eighty-seven million, two hundred seventy-eight thousand, four hundred eighty-one".