557249197 has 2 divisors, whose sum is σ = 557249198. Its totient is φ = 557249196.

The previous prime is 557249183. The next prime is 557249227. The reversal of 557249197 is 791942755.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 500909161 + 56340036 = 22381^2 + 7506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557249197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 557249197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557249177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278624598 + 278624599.

It is an arithmetic number, because the mean of its divisors is an integer number (278624599).

Almost surely, 2^557249197 is an apocalyptic number.

It is an amenable number.

557249197 is a deficient number, since it is larger than the sum of its proper divisors (1).

557249197 is an equidigital number, since it uses as much as digits as its factorization.

557249197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 49.

The square root of 557249197 is about 23606.1262599352. The cubic root of 557249197 is about 822.9052197780.

The spelling of 557249197 in words is "five hundred fifty-seven million, two hundred forty-nine thousand, one hundred ninety-seven".