57425321 has 2 divisors, whose sum is σ = 57425322. Its totient is φ = 57425320.

The previous prime is 57425311. The next prime is 57425323. The reversal of 57425321 is 12352475.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41783296 + 15642025 = 6464^2 + 3955^2 .

It is a cyclic number.

It is not a de Polignac number, because 57425321 - 2⁶ = 57425257 is a prime.

Together with 57425323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57425323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28712660 + 28712661.

It is an arithmetic number, because the mean of its divisors is an integer number (28712661).

Almost surely, 2^57425321 is an apocalyptic number.

It is an amenable number.

57425321 is a deficient number, since it is larger than the sum of its proper divisors (1).

57425321 is an equidigital number, since it uses as much as digits as its factorization.

57425321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 29.

The square root of 57425321 is about 7577.9496567343. The cubic root of 57425321 is about 385.8049633501.

Adding to 57425321 its reverse (12352475), we get a palindrome (69777796).

The spelling of 57425321 in words is "fifty-seven million, four hundred twenty-five thousand, three hundred twenty-one".