57130181 has 2 divisors, whose sum is σ = 57130182. Its totient is φ = 57130180.

The previous prime is 57130153. The next prime is 57130219. The reversal of 57130181 is 18103175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48427681 + 8702500 = 6959^2 + 2950^2 .

It is a cyclic number.

It is not a de Polignac number, because 57130181 - 2¹⁸ = 56868037 is a prime.

It is a super-2 number, since 2×57130181² = 6527715162185522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57130181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57130681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28565090 + 28565091.

It is an arithmetic number, because the mean of its divisors is an integer number (28565091).

Almost surely, 2^57130181 is an apocalyptic number.

It is an amenable number.

57130181 is a deficient number, since it is larger than the sum of its proper divisors (1).

57130181 is an equidigital number, since it uses as much as digits as its factorization.

57130181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 57130181 is about 7558.4509656410. The cubic root of 57130181 is about 385.1428738295.

The spelling of 57130181 in words is "fifty-seven million, one hundred thirty thousand, one hundred eighty-one".