5513681 has 2 divisors, whose sum is σ = 5513682. Its totient is φ = 5513680.

The previous prime is 5513671. The next prime is 5513687. The reversal of 5513681 is 1863155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5216656 + 297025 = 2284^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 5513681 - 2¹⁰ = 5512657 is a prime.

It is a super-2 number, since 2×5513681² = 60801356339522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5513687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2756840 + 2756841.

It is an arithmetic number, because the mean of its divisors is an integer number (2756841).

Almost surely, 2^5513681 is an apocalyptic number.

It is an amenable number.

5513681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5513681 is an equidigital number, since it uses as much as digits as its factorization.

5513681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The square root of 5513681 is about 2348.1228673134. The cubic root of 5513681 is about 176.6636552629.

The spelling of 5513681 in words is "five million, five hundred thirteen thousand, six hundred eighty-one".