5535661 has 2 divisors, whose sum is σ = 5535662. Its totient is φ = 5535660.

The previous prime is 5535653. The next prime is 5535683. The reversal of 5535661 is 1665355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3861225 + 1674436 = 1965^2 + 1294^2 .

It is a cyclic number.

It is not a de Polignac number, because 5535661 - 2³ = 5535653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5535611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2767830 + 2767831.

It is an arithmetic number, because the mean of its divisors is an integer number (2767831).

Almost surely, 2^5535661 is an apocalyptic number.

It is an amenable number.

5535661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5535661 is an equidigital number, since it uses as much as digits as its factorization.

5535661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13500, while the sum is 31.

The square root of 5535661 is about 2352.7985464123. The cubic root of 5535661 is about 176.8980974719.

The spelling of 5535661 in words is "five million, five hundred thirty-five thousand, six hundred sixty-one".