55568015 has 4 divisors (see below), whose sum is σ = 66681624. Its totient is φ = 44454408.

The previous prime is 55568003. The next prime is 55568017. The reversal of 55568015 is 51086555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55568015 - 2¹² = 55563919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55568017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5556797 + ... + 5556806.

It is an arithmetic number, because the mean of its divisors is an integer number (16670406).

Almost surely, 2^55568015 is an apocalyptic number.

55568015 is a deficient number, since it is larger than the sum of its proper divisors (11113609).

55568015 is a wasteful number, since it uses less digits than its factorization.

55568015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11113608.

The product of its (nonzero) digits is 30000, while the sum is 35.

The square root of 55568015 is about 7454.3956830852. The cubic root of 55568015 is about 381.5999370593.

The spelling of 55568015 in words is "fifty-five million, five hundred sixty-eight thousand, fifteen".