55661425 has 12 divisors (see below), whose sum is σ = 69896320. Its totient is φ = 43963920.

The previous prime is 55661423. The next prime is 55661429. The reversal of 55661425 is 52416655.

55661425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55661425 - 2¹ = 55661423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55661423) 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 in 11 ways as a sum of consecutive naturals, for example, 12117 + ... + 16066.

Almost surely, 2^55661425 is an apocalyptic number.

It is an amenable number.

55661425 is a deficient number, since it is larger than the sum of its proper divisors (14234895).

55661425 is a wasteful number, since it uses less digits than its factorization.

55661425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28272 (or 28267 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 55661425 is about 7460.6584830027. The cubic root of 55661425 is about 381.8136409049.

The spelling of 55661425 in words is "fifty-five million, six hundred sixty-one thousand, four hundred twenty-five".