57457109 has 2 divisors, whose sum is σ = 57457110. Its totient is φ = 57457108.

The previous prime is 57457087. The next prime is 57457117. The reversal of 57457109 is 90175475.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41280625 + 16176484 = 6425^2 + 4022^2 .

It is a cyclic number.

It is not a de Polignac number, because 57457109 - 2⁸ = 57456853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57457129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28728554 + 28728555.

It is an arithmetic number, because the mean of its divisors is an integer number (28728555).

Almost surely, 2^57457109 is an apocalyptic number.

It is an amenable number.

57457109 is a deficient number, since it is larger than the sum of its proper divisors (1).

57457109 is an equidigital number, since it uses as much as digits as its factorization.

57457109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 57457109 is about 7580.0467676658. The cubic root of 57457109 is about 385.8761381427.

The spelling of 57457109 in words is "fifty-seven million, four hundred fifty-seven thousand, one hundred nine".