2146750561 has 2 divisors, whose sum is σ = 2146750562. Its totient is φ = 2146750560.

The previous prime is 2146750537. The next prime is 2146750591. The reversal of 2146750561 is 1650576412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2020053025 + 126697536 = 44945^2 + 11256^2 .

It is a cyclic number.

It is not a de Polignac number, because 2146750561 - 2⁹ = 2146750049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2146750561.

It is not a weakly prime, because it can be changed into another prime (2146750591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073375280 + 1073375281.

It is an arithmetic number, because the mean of its divisors is an integer number (1073375281).

Almost surely, 2^2146750561 is an apocalyptic number.

It is an amenable number.

2146750561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146750561 is an equidigital number, since it uses as much as digits as its factorization.

2146750561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 2146750561 is about 46333.0396261674. The cubic root of 2146750561 is about 1290.0123310722.

The spelling of 2146750561 in words is "two billion, one hundred forty-six million, seven hundred fifty thousand, five hundred sixty-one".