2064572561 has 2 divisors, whose sum is σ = 2064572562. Its totient is φ = 2064572560.

The previous prime is 2064572557. The next prime is 2064572563. The reversal of 2064572561 is 1652754602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1787682961 + 276889600 = 42281^2 + 16640^2 .

It is a cyclic number.

It is not a de Polignac number, because 2064572561 - 2² = 2064572557 is a prime.

Together with 2064572563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2064572563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032286280 + 1032286281.

It is an arithmetic number, because the mean of its divisors is an integer number (1032286281).

Almost surely, 2^2064572561 is an apocalyptic number.

It is an amenable number.

2064572561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2064572561 is an equidigital number, since it uses as much as digits as its factorization.

2064572561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 2064572561 is about 45437.5677275974. The cubic root of 2064572561 is about 1273.3370730697.

The spelling of 2064572561 in words is "two billion, sixty-four million, five hundred seventy-two thousand, five hundred sixty-one".