5521631 has 2 divisors, whose sum is σ = 5521632. Its totient is φ = 5521630.

The previous prime is 5521603. The next prime is 5521643. The reversal of 5521631 is 1361255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5521631 - 2⁶ = 5521567 is a prime.

It is a super-2 number, since 2×5521631² = 60976817800322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5521597 and 5521606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5521661) 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, 2760815 + 2760816.

It is an arithmetic number, because the mean of its divisors is an integer number (2760816).

Almost surely, 2^5521631 is an apocalyptic number.

5521631 is a deficient number, since it is larger than the sum of its proper divisors (1).

5521631 is an equidigital number, since it uses as much as digits as its factorization.

5521631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 23.

The square root of 5521631 is about 2349.8150991089. The cubic root of 5521631 is about 176.7485230416.

Adding to 5521631 its reverse (1361255), we get a palindrome (6882886).

The spelling of 5521631 in words is "five million, five hundred twenty-one thousand, six hundred thirty-one".