57129049 has 2 divisors, whose sum is σ = 57129050. Its totient is φ = 57129048.

The previous prime is 57129047. The next prime is 57129077. The reversal of 57129049 is 94092175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45805824 + 11323225 = 6768^2 + 3365^2 .

It is a cyclic number.

It is not a de Polignac number, because 57129049 - 2¹ = 57129047 is a prime.

Together with 57129047, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 57128999 and 57129017.

It is not a weakly prime, because it can be changed into another prime (57129041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28564524 + 28564525.

It is an arithmetic number, because the mean of its divisors is an integer number (28564525).

Almost surely, 2^57129049 is an apocalyptic number.

It is an amenable number.

57129049 is a deficient number, since it is larger than the sum of its proper divisors (1).

57129049 is an equidigital number, since it uses as much as digits as its factorization.

57129049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 57129049 is about 7558.3760822018. The cubic root of 57129049 is about 385.1403300217.

The spelling of 57129049 in words is "fifty-seven million, one hundred twenty-nine thousand, forty-nine".