57114721 has 2 divisors, whose sum is σ = 57114722. Its totient is φ = 57114720.

The previous prime is 57114719. The next prime is 57114737. The reversal of 57114721 is 12741175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41990400 + 15124321 = 6480^2 + 3889^2 .

It is a cyclic number.

It is not a de Polignac number, because 57114721 - 2¹ = 57114719 is a prime.

Together with 57114719, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57114721.

It is not a weakly prime, because it can be changed into another prime (57114751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28557360 + 28557361.

It is an arithmetic number, because the mean of its divisors is an integer number (28557361).

Almost surely, 2^57114721 is an apocalyptic number.

It is an amenable number.

57114721 is a deficient number, since it is larger than the sum of its proper divisors (1).

57114721 is an equidigital number, since it uses as much as digits as its factorization.

57114721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1960, while the sum is 28.

The square root of 57114721 is about 7557.4282001220. The cubic root of 57114721 is about 385.1081295204.

Adding to 57114721 its reverse (12741175), we get a palindrome (69855896).

The spelling of 57114721 in words is "fifty-seven million, one hundred fourteen thousand, seven hundred twenty-one".