55615305 has 16 divisors (see below), whose sum is σ = 89121024. Its totient is φ = 29616000.

The previous prime is 55615303. The next prime is 55615319. The reversal of 55615305 is 50351655.

55615305 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 55615305 - 2¹ = 55615303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55615303) 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 15 ways as a sum of consecutive naturals, for example, 8797 + ... + 13733.

It is an arithmetic number, because the mean of its divisors is an integer number (5570064).

Almost surely, 2^55615305 is an apocalyptic number.

It is an amenable number.

55615305 is a deficient number, since it is larger than the sum of its proper divisors (33505719).

55615305 is a wasteful number, since it uses less digits than its factorization.

55615305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5696.

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 55615305 is about 7457.5669624885. The cubic root of 55615305 is about 381.7081572543.

The spelling of 55615305 in words is "fifty-five million, six hundred fifteen thousand, three hundred five".