55309115 has 16 divisors (see below), whose sum is σ = 69209856. Its totient is φ = 42384000.

The previous prime is 55309097. The next prime is 55309147. The reversal of 55309115 is 51190355.

It is a happy number.

It is not a de Polignac number, because 55309115 - 2¹⁰ = 55308091 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13889 + ... + 17421.

It is an arithmetic number, because the mean of its divisors is an integer number (4325616).

Almost surely, 2^55309115 is an apocalyptic number.

55309115 is a deficient number, since it is larger than the sum of its proper divisors (13900741).

55309115 is a wasteful number, since it uses less digits than its factorization.

55309115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670.

The product of its (nonzero) digits is 3375, while the sum is 29.

The square root of 55309115 is about 7437.0098157795. The cubic root of 55309115 is about 381.0063698322.

The spelling of 55309115 in words is "fifty-five million, three hundred nine thousand, one hundred fifteen".