5517661 has 2 divisors, whose sum is σ = 5517662. Its totient is φ = 5517660.

The previous prime is 5517653. The next prime is 5517667. The reversal of 5517661 is 1667155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5433561 + 84100 = 2331^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 5517661 - 2³ = 5517653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5517667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2758830 + 2758831.

It is an arithmetic number, because the mean of its divisors is an integer number (2758831).

Almost surely, 2^5517661 is an apocalyptic number.

It is an amenable number.

5517661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5517661 is an equidigital number, since it uses as much as digits as its factorization.

5517661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 31.

The square root of 5517661 is about 2348.9701998961. The cubic root of 5517661 is about 176.7061527182.

The spelling of 5517661 in words is "five million, five hundred seventeen thousand, six hundred sixty-one".