1422799561 has 2 divisors, whose sum is σ = 1422799562. Its totient is φ = 1422799560.

The previous prime is 1422799549. The next prime is 1422799571. The reversal of 1422799561 is 1659972241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1371591225 + 51208336 = 37035^2 + 7156^2 .

It is an emirp because it is prime and its reverse (1659972241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1422799561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1422799571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711399780 + 711399781.

It is an arithmetic number, because the mean of its divisors is an integer number (711399781).

Almost surely, 2^1422799561 is an apocalyptic number.

It is an amenable number.

1422799561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422799561 is an equidigital number, since it uses as much as digits as its factorization.

1422799561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 46.

The square root of 1422799561 is about 37720.0153897105. The cubic root of 1422799561 is about 1124.7290372279.

The spelling of 1422799561 in words is "one billion, four hundred twenty-two million, seven hundred ninety-nine thousand, five hundred sixty-one".