55512115 has 16 divisors (see below), whose sum is σ = 67824000. Its totient is φ = 43610112.

The previous prime is 55512077. The next prime is 55512137. The reversal of 55512115 is 51121555.

55512115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55512115 - 2¹³ = 55503923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55512115.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 123411 + ... + 123859.

It is an arithmetic number, because the mean of its divisors is an integer number (4239000).

Almost surely, 2^55512115 is an apocalyptic number.

55512115 is a deficient number, since it is larger than the sum of its proper divisors (12311885).

55512115 is a wasteful number, since it uses less digits than its factorization.

55512115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846.

The product of its digits is 1250, while the sum is 25.

The square root of 55512115 is about 7450.6452740685. The cubic root of 55512115 is about 381.4719342058.

The spelling of 55512115 in words is "fifty-five million, five hundred twelve thousand, one hundred fifteen".