557073397 has 2 divisors, whose sum is σ = 557073398. Its totient is φ = 557073396.

The previous prime is 557073371. The next prime is 557073421. The reversal of 557073397 is 793370755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415915236 + 141158161 = 20394^2 + 11881^2 .

It is a cyclic number.

It is not a de Polignac number, because 557073397 - 2⁷ = 557073269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557073197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278536698 + 278536699.

It is an arithmetic number, because the mean of its divisors is an integer number (278536699).

Almost surely, 2^557073397 is an apocalyptic number.

It is an amenable number.

557073397 is a deficient number, since it is larger than the sum of its proper divisors (1).

557073397 is an equidigital number, since it uses as much as digits as its factorization.

557073397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 694575, while the sum is 46.

The square root of 557073397 is about 23602.4023565399. The cubic root of 557073397 is about 822.8186744442.

The spelling of 557073397 in words is "five hundred fifty-seven million, seventy-three thousand, three hundred ninety-seven".