5533681 has 2 divisors, whose sum is σ = 5533682. Its totient is φ = 5533680.

The previous prime is 5533679. The next prime is 5533691. The reversal of 5533681 is 1863355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5475600 + 58081 = 2340^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 5533681 - 2¹ = 5533679 is a prime.

It is a super-2 number, since 2×5533681² = 61243250819522, which contains 22 as substring.

Together with 5533679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5533621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2766840 + 2766841.

It is an arithmetic number, because the mean of its divisors is an integer number (2766841).

Almost surely, 2^5533681 is an apocalyptic number.

It is an amenable number.

5533681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5533681 is an equidigital number, since it uses as much as digits as its factorization.

5533681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 5533681 is about 2352.3777332733. The cubic root of 5533681 is about 176.8770039354.

The spelling of 5533681 in words is "five million, five hundred thirty-three thousand, six hundred eighty-one".