57225257 has 2 divisors, whose sum is σ = 57225258. Its totient is φ = 57225256.

The previous prime is 57225253. The next prime is 57225277. The reversal of 57225257 is 75252275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38700841 + 18524416 = 6221^2 + 4304^2 .

It is a cyclic number.

It is not a de Polignac number, because 57225257 - 2² = 57225253 is a prime.

It is not a weakly prime, because it can be changed into another prime (57225251) 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, 28612628 + 28612629.

It is an arithmetic number, because the mean of its divisors is an integer number (28612629).

Almost surely, 2^57225257 is an apocalyptic number.

It is an amenable number.

57225257 is a deficient number, since it is larger than the sum of its proper divisors (1).

57225257 is an equidigital number, since it uses as much as digits as its factorization.

57225257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49000, while the sum is 35.

The square root of 57225257 is about 7564.7377350441. The cubic root of 57225257 is about 385.3564069035.

The spelling of 57225257 in words is "fifty-seven million, two hundred twenty-five thousand, two hundred fifty-seven".