1010875561 has 2 divisors, whose sum is σ = 1010875562. Its totient is φ = 1010875560.

The previous prime is 1010875531. The next prime is 1010875583. The reversal of 1010875561 is 1655780101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 555309225 + 455566336 = 23565^2 + 21344^2 .

It is an emirp because it is prime and its reverse (1655780101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1010875561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1010875501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505437780 + 505437781.

It is an arithmetic number, because the mean of its divisors is an integer number (505437781).

Almost surely, 2^1010875561 is an apocalyptic number.

It is an amenable number.

1010875561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010875561 is an equidigital number, since it uses as much as digits as its factorization.

1010875561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 34.

The square root of 1010875561 is about 31794.2693106792. The cubic root of 1010875561 is about 1003.6121238516.

The spelling of 1010875561 in words is "one billion, ten million, eight hundred seventy-five thousand, five hundred sixty-one".