57052181 has 2 divisors, whose sum is σ = 57052182. Its totient is φ = 57052180.

The previous prime is 57052169. The next prime is 57052207. The reversal of 57052181 is 18125075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55741156 + 1311025 = 7466^2 + 1145^2 .

It is a cyclic number.

It is not a de Polignac number, because 57052181 - 2¹⁰ = 57051157 is a prime.

It is a super-2 number, since 2×57052181² = 6509902713713522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57052381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28526090 + 28526091.

It is an arithmetic number, because the mean of its divisors is an integer number (28526091).

Almost surely, 2^57052181 is an apocalyptic number.

It is an amenable number.

57052181 is a deficient number, since it is larger than the sum of its proper divisors (1).

57052181 is an equidigital number, since it uses as much as digits as its factorization.

57052181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 57052181 is about 7553.2894158770. The cubic root of 57052181 is about 384.9675151092.

The spelling of 57052181 in words is "fifty-seven million, fifty-two thousand, one hundred eighty-one".