2567579897 has 2 divisors, whose sum is σ = 2567579898. Its totient is φ = 2567579896.

The previous prime is 2567579893. The next prime is 2567579969. The reversal of 2567579897 is 7989757652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2210974441 + 356605456 = 47021^2 + 18884^2 .

It is a cyclic number.

It is not a de Polignac number, because 2567579897 - 2² = 2567579893 is a prime.

It is not a weakly prime, because it can be changed into another prime (2567579891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283789948 + 1283789949.

It is an arithmetic number, because the mean of its divisors is an integer number (1283789949).

Almost surely, 2^2567579897 is an apocalyptic number.

It is an amenable number.

2567579897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2567579897 is an equidigital number, since it uses as much as digits as its factorization.

2567579897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66679200, while the sum is 65.

The square root of 2567579897 is about 50671.2926320219. The cubic root of 2567579897 is about 1369.3295771383.

The spelling of 2567579897 in words is "two billion, five hundred sixty-seven million, five hundred seventy-nine thousand, eight hundred ninety-seven".