55656615 has 16 divisors (see below), whose sum is σ = 101772288. Its totient is φ = 25442976.

The previous prime is 55656611. The next prime is 55656617. The reversal of 55656615 is 51665655.

It is not a de Polignac number, because 55656615 - 2² = 55656611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55656611) 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 in 15 ways as a sum of consecutive naturals, for example, 264927 + ... + 265136.

It is an arithmetic number, because the mean of its divisors is an integer number (6360768).

Almost surely, 2^55656615 is an apocalyptic number.

55656615 is a deficient number, since it is larger than the sum of its proper divisors (46115673).

55656615 is a wasteful number, since it uses less digits than its factorization.

55656615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530078.

The product of its digits is 135000, while the sum is 39.

The square root of 55656615 is about 7460.3361184333. The cubic root of 55656615 is about 381.8026424051.

The spelling of 55656615 in words is "fifty-five million, six hundred fifty-six thousand, six hundred fifteen".