55816801 has 4 divisors (see below), whose sum is σ = 55832112. Its totient is φ = 55801492.

The previous prime is 55816799. The next prime is 55816811. The reversal of 55816801 is 10861855.

55816801 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10861855 = 5 ⋅2172371.

It is a cyclic number.

It is not a de Polignac number, because 55816801 - 2¹ = 55816799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55816811) 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, 1326 + ... + 10648.

It is an arithmetic number, because the mean of its divisors is an integer number (13958028).

Almost surely, 2^55816801 is an apocalyptic number.

It is an amenable number.

55816801 is a deficient number, since it is larger than the sum of its proper divisors (15311).

55816801 is an equidigital number, since it uses as much as digits as its factorization.

55816801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15310.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 55816801 is about 7471.0642481510. The cubic root of 55816801 is about 382.1685818784.

The spelling of 55816801 in words is "fifty-five million, eight hundred sixteen thousand, eight hundred one".