557225297861 has 2 divisors, whose sum is σ = 557225297862. Its totient is φ = 557225297860.

The previous prime is 557225297809. The next prime is 557225297873. The reversal of 557225297861 is 168792522755.

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., 507727502500 + 49497795361 = 712550^2 + 222481^2 .

It is a cyclic number.

It is not a de Polignac number, because 557225297861 - 2³⁸ = 282347390917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 557225297861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557225297891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278612648930 + 278612648931.

It is an arithmetic number, because the mean of its divisors is an integer number (278612648931).

Almost surely, 2^557225297861 is an apocalyptic number.

It is an amenable number.

557225297861 is a deficient number, since it is larger than the sum of its proper divisors (1).

557225297861 is an equidigital number, since it uses as much as digits as its factorization.

557225297861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168000, while the sum is 59.

The spelling of 557225297861 in words is "five hundred fifty-seven billion, two hundred twenty-five million, two hundred ninety-seven thousand, eight hundred sixty-one".