57521346811 has 2 divisors, whose sum is σ = 57521346812. Its totient is φ = 57521346810.

The previous prime is 57521346809. The next prime is 57521346877. The reversal of 57521346811 is 11864312575.

57521346811 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 is a cyclic number.

It is not a de Polignac number, because 57521346811 - 2¹ = 57521346809 is a prime.

Together with 57521346809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (57521341811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28760673405 + 28760673406.

It is an arithmetic number, because the mean of its divisors is an integer number (28760673406).

Almost surely, 2^57521346811 is an apocalyptic number.

57521346811 is a deficient number, since it is larger than the sum of its proper divisors (1).

57521346811 is an equidigital number, since it uses as much as digits as its factorization.

57521346811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 43.

The spelling of 57521346811 in words is "fifty-seven billion, five hundred twenty-one million, three hundred forty-six thousand, eight hundred eleven".