3122752561 has 2 divisors, whose sum is σ = 3122752562. Its totient is φ = 3122752560.

The previous prime is 3122752499. The next prime is 3122752597. The reversal of 3122752561 is 1652572213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2944690225 + 178062336 = 54265^2 + 13344^2 .

It is a cyclic number.

It is not a de Polignac number, because 3122752561 - 2⁷ = 3122752433 is a prime.

It is not a weakly prime, because it can be changed into another prime (3122752361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561376280 + 1561376281.

It is an arithmetic number, because the mean of its divisors is an integer number (1561376281).

Almost surely, 2^3122752561 is an apocalyptic number.

It is an amenable number.

3122752561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3122752561 is an equidigital number, since it uses as much as digits as its factorization.

3122752561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 34.

The square root of 3122752561 is about 55881.5941164888. The cubic root of 3122752561 is about 1461.6583023060.

The spelling of 3122752561 in words is "three billion, one hundred twenty-two million, seven hundred fifty-two thousand, five hundred sixty-one".