1511060561 has 2 divisors, whose sum is σ = 1511060562. Its totient is φ = 1511060560.

The previous prime is 1511060539. The next prime is 1511060563. The reversal of 1511060561 is 1650601151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1405875025 + 105185536 = 37495^2 + 10256^2 .

It is a cyclic number.

It is not a de Polignac number, because 1511060561 - 2¹⁴ = 1511044177 is a prime.

Together with 1511060563, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1511060561.

It is not a weakly prime, because it can be changed into another prime (1511060563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 755530280 + 755530281.

It is an arithmetic number, because the mean of its divisors is an integer number (755530281).

Almost surely, 2^1511060561 is an apocalyptic number.

It is an amenable number.

1511060561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1511060561 is an equidigital number, since it uses as much as digits as its factorization.

1511060561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 1511060561 is about 38872.3624314242. The cubic root of 1511060561 is about 1147.5209511350.

The spelling of 1511060561 in words is "one billion, five hundred eleven million, sixty thousand, five hundred sixty-one".