2567347561 has 9 divisors (see below), whose sum is σ = 2685043389. Its totient is φ = 2454609036.

The previous prime is 2567347529. The next prime is 2567347579. The reversal of 2567347561 is 1657437652.

The square root of 2567347561 is 50669.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2567347561 - 2⁵ = 2567347529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2567347511) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1164286 + ... + 1166488.

Almost surely, 2^2567347561 is an apocalyptic number.

2567347561 is the 50669-th square number.

2567347561 is the 25335-th centered octagonal number.

It is an amenable number.

2567347561 is a deficient number, since it is larger than the sum of its proper divisors (117695828).

2567347561 is an frugal number, since it uses more digits than its factorization.

2567347561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4452 (or 2226 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 46.

The cubic root of 2567347561 is about 1369.2882731133.

Subtracting from 2567347561 its reverse (1657437652), we obtain a palindrome (909909909).

The spelling of 2567347561 in words is "two billion, five hundred sixty-seven million, three hundred forty-seven thousand, five hundred sixty-one".