57055129 has 2 divisors, whose sum is σ = 57055130. Its totient is φ = 57055128.

The previous prime is 57055057. The next prime is 57055153. The reversal of 57055129 is 92155075.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39187600 + 17867529 = 6260^2 + 4227^2 .

It is a cyclic number.

It is not a de Polignac number, because 57055129 - 2⁹ = 57054617 is a prime.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 57055094 and 57055103.

It is not a weakly prime, because it can be changed into another prime (57055429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28527564 + 28527565.

It is an arithmetic number, because the mean of its divisors is an integer number (28527565).

Almost surely, 2^57055129 is an apocalyptic number.

It is an amenable number.

57055129 is a deficient number, since it is larger than the sum of its proper divisors (1).

57055129 is an equidigital number, since it uses as much as digits as its factorization.

57055129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 57055129 is about 7553.4845601219. The cubic root of 57055129 is about 384.9741456748.

The spelling of 57055129 in words is "fifty-seven million, fifty-five thousand, one hundred twenty-nine".