1054220561 has 2 divisors, whose sum is σ = 1054220562. Its totient is φ = 1054220560.

The previous prime is 1054220549. The next prime is 1054220569. The reversal of 1054220561 is 1650224501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1036840000 + 17380561 = 32200^2 + 4169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1054220561 is a prime.

It is a super-2 number, since 2×1054220561² = 2222761982470309442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1054220561.

It is not a weakly prime, because it can be changed into another prime (1054220569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527110280 + 527110281.

It is an arithmetic number, because the mean of its divisors is an integer number (527110281).

Almost surely, 2^1054220561 is an apocalyptic number.

It is an amenable number.

1054220561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1054220561 is an equidigital number, since it uses as much as digits as its factorization.

1054220561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1054220561 is about 32468.7628498531. The cubic root of 1054220561 is about 1017.7563656849.

The spelling of 1054220561 in words is "one billion, fifty-four million, two hundred twenty thousand, five hundred sixty-one".