3118561 has 2 divisors, whose sum is σ = 3118562. Its totient is φ = 3118560.

The previous prime is 3118553. The next prime is 3118567. The reversal of 3118561 is 1658113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1782225 + 1336336 = 1335^2 + 1156^2 .

It is a cyclic number.

It is not a de Polignac number, because 3118561 - 2³ = 3118553 is a prime.

It is not a weakly prime, because it can be changed into another prime (3118567) 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, 1559280 + 1559281.

It is an arithmetic number, because the mean of its divisors is an integer number (1559281).

Almost surely, 2^3118561 is an apocalyptic number.

It is an amenable number.

3118561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3118561 is an equidigital number, since it uses as much as digits as its factorization.

3118561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 25.

The square root of 3118561 is about 1765.9447896240. The cubic root of 3118561 is about 146.1004031963.

The spelling of 3118561 in words is "three million, one hundred eighteen thousand, five hundred sixty-one".