57129077 has 2 divisors, whose sum is σ = 57129078. Its totient is φ = 57129076.

The previous prime is 57129049. The next prime is 57129089. The reversal of 57129077 is 77092175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46799281 + 10329796 = 6841^2 + 3214^2 .

It is a cyclic number.

It is not a de Polignac number, because 57129077 - 2¹⁶ = 57063541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57129077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57129047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28564538 + 28564539.

It is an arithmetic number, because the mean of its divisors is an integer number (28564539).

Almost surely, 2^57129077 is an apocalyptic number.

It is an amenable number.

57129077 is a deficient number, since it is larger than the sum of its proper divisors (1).

57129077 is an equidigital number, since it uses as much as digits as its factorization.

57129077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 57129077 is about 7558.3779344513. The cubic root of 57129077 is about 385.1403929431.

The spelling of 57129077 in words is "fifty-seven million, one hundred twenty-nine thousand, seventy-seven".