55616311 has 4 divisors (see below), whose sum is σ = 55643112. Its totient is φ = 55589512.

The previous prime is 55616303. The next prime is 55616317. The reversal of 55616311 is 11361655.

55616311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55616311 - 2³ = 55616303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55616311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55616317) 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 3 ways as a sum of consecutive naturals, for example, 10000 + ... + 14533.

It is an arithmetic number, because the mean of its divisors is an integer number (13910778).

Almost surely, 2^55616311 is an apocalyptic number.

55616311 is a deficient number, since it is larger than the sum of its proper divisors (26801).

55616311 is a wasteful number, since it uses less digits than its factorization.

55616311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26800.

The product of its digits is 2700, while the sum is 28.

The square root of 55616311 is about 7457.6344104548. The cubic root of 55616311 is about 381.7104587556.

Adding to 55616311 its reverse (11361655), we get a palindrome (66977966).

The spelling of 55616311 in words is "fifty-five million, six hundred sixteen thousand, three hundred eleven".