5561629 has 2 divisors, whose sum is σ = 5561630. Its totient is φ = 5561628.

The previous prime is 5561627. The next prime is 5561639. The reversal of 5561629 is 9261655.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4347225 + 1214404 = 2085^2 + 1102^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561629 - 2¹ = 5561627 is a prime.

Together with 5561627, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 5561594 and 5561603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5561627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780814 + 2780815.

It is an arithmetic number, because the mean of its divisors is an integer number (2780815).

Almost surely, 2^5561629 is an apocalyptic number.

It is an amenable number.

5561629 is a deficient number, since it is larger than the sum of its proper divisors (1).

5561629 is an equidigital number, since it uses as much as digits as its factorization.

5561629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 34.

The square root of 5561629 is about 2358.3106241545. The cubic root of 5561629 is about 177.1742780037.

The spelling of 5561629 in words is "five million, five hundred sixty-one thousand, six hundred twenty-nine".