57270197 has 2 divisors, whose sum is σ = 57270198. Its totient is φ = 57270196.

The previous prime is 57270173. The next prime is 57270203. The reversal of 57270197 is 79107275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44209201 + 13060996 = 6649^2 + 3614^2 .

It is a cyclic number.

It is not a de Polignac number, because 57270197 - 2⁶ = 57270133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57270197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57270107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28635098 + 28635099.

It is an arithmetic number, because the mean of its divisors is an integer number (28635099).

Almost surely, 2^57270197 is an apocalyptic number.

It is an amenable number.

57270197 is a deficient number, since it is larger than the sum of its proper divisors (1).

57270197 is an equidigital number, since it uses as much as digits as its factorization.

57270197 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 57270197 is about 7567.7075128469. The cubic root of 57270197 is about 385.4572562281.

The spelling of 57270197 in words is "fifty-seven million, two hundred seventy thousand, one hundred ninety-seven".