5425561 has 2 divisors, whose sum is σ = 5425562. Its totient is φ = 5425560.

The previous prime is 5425559. The next prime is 5425573. The reversal of 5425561 is 1655245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4995225 + 430336 = 2235^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 5425561 - 2¹ = 5425559 is a prime.

Together with 5425559, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (5425591) 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, 2712780 + 2712781.

It is an arithmetic number, because the mean of its divisors is an integer number (2712781).

Almost surely, 2^5425561 is an apocalyptic number.

It is an amenable number.

5425561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5425561 is an equidigital number, since it uses as much as digits as its factorization.

5425561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 28.

The square root of 5425561 is about 2329.2833661880. The cubic root of 5425561 is about 175.7174465059.

The spelling of 5425561 in words is "five million, four hundred twenty-five thousand, five hundred sixty-one".