57505277 has 2 divisors, whose sum is σ = 57505278. Its totient is φ = 57505276.

The previous prime is 57505241. The next prime is 57505297. The reversal of 57505277 is 77250575.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46389721 + 11115556 = 6811^2 + 3334^2 .

It is a cyclic number.

It is not a de Polignac number, because 57505277 - 2¹² = 57501181 is a prime.

It is a zygodrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 57505277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57505207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28752638 + 28752639.

It is an arithmetic number, because the mean of its divisors is an integer number (28752639).

Almost surely, 2^57505277 is an apocalyptic number.

It is an amenable number.

57505277 is a deficient number, since it is larger than the sum of its proper divisors (1).

57505277 is an equidigital number, since it uses as much as digits as its factorization.

57505277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85750, while the sum is 38.

The square root of 57505277 is about 7583.2233911444. The cubic root of 57505277 is about 385.9839384978.

The spelling of 57505277 in words is "fifty-seven million, five hundred five thousand, two hundred seventy-seven".