1017274561 has 2 divisors, whose sum is σ = 1017274562. Its totient is φ = 1017274560.

The previous prime is 1017274553. The next prime is 1017274589. The reversal of 1017274561 is 1654727101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 852640000 + 164634561 = 29200^2 + 12831^2 .

It is an emirp because it is prime and its reverse (1654727101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1017274561 - 2³ = 1017274553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1017274501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 508637280 + 508637281.

It is an arithmetic number, because the mean of its divisors is an integer number (508637281).

Almost surely, 2^1017274561 is an apocalyptic number.

It is an amenable number.

1017274561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1017274561 is an equidigital number, since it uses as much as digits as its factorization.

1017274561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 1017274561 is about 31894.7419020753. The cubic root of 1017274561 is about 1005.7253448680.

The spelling of 1017274561 in words is "one billion, seventeen million, two hundred seventy-four thousand, five hundred sixty-one".