557272997 has 2 divisors, whose sum is σ = 557272998. Its totient is φ = 557272996.

The previous prime is 557272993. The next prime is 557272999. The reversal of 557272997 is 799272755.

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., 334487521 + 222785476 = 18289^2 + 14926^2 .

It is a cyclic number.

It is not a de Polignac number, because 557272997 - 2² = 557272993 is a prime.

Together with 557272999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557272993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278636498 + 278636499.

It is an arithmetic number, because the mean of its divisors is an integer number (278636499).

Almost surely, 2^557272997 is an apocalyptic number.

It is an amenable number.

557272997 is a deficient number, since it is larger than the sum of its proper divisors (1).

557272997 is an equidigital number, since it uses as much as digits as its factorization.

557272997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2778300, while the sum is 53.

The square root of 557272997 is about 23606.6303609812. The cubic root of 557272997 is about 822.9169349828.

The spelling of 557272997 in words is "five hundred fifty-seven million, two hundred seventy-two thousand, nine hundred ninety-seven".