1126556897 has 2 divisors, whose sum is σ = 1126556898. Its totient is φ = 1126556896.

The previous prime is 1126556869. The next prime is 1126556917. The reversal of 1126556897 is 7986556211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 625200016 + 501356881 = 25004^2 + 22391^2 .

It is a cyclic number.

It is not a de Polignac number, because 1126556897 - 2²⁴ = 1109779681 is a prime.

It is not a weakly prime, because it can be changed into another prime (1126556297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563278448 + 563278449.

It is an arithmetic number, because the mean of its divisors is an integer number (563278449).

Almost surely, 2^1126556897 is an apocalyptic number.

It is an amenable number.

1126556897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1126556897 is an equidigital number, since it uses as much as digits as its factorization.

1126556897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 50.

The square root of 1126556897 is about 33564.2204884904. The cubic root of 1126556897 is about 1040.5214646361.

The spelling of 1126556897 in words is "one billion, one hundred twenty-six million, five hundred fifty-six thousand, eight hundred ninety-seven".