55495805 has 8 divisors (see below), whose sum is σ = 66980952. Its totient is φ = 44139328.

The previous prime is 55495771. The next prime is 55495807. The reversal of 55495805 is 50859455.

55495805 = 4300² + 4301² + 4302².

It can be written as a sum of positive squares in 4 ways, for example, as 29658916 + 25836889 = 5446^2 + 5083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55495805 - 2²⁰ = 54447229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55495807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31214 + ... + 32943.

It is an arithmetic number, because the mean of its divisors is an integer number (8372619).

Almost surely, 2^55495805 is an apocalyptic number.

It is an amenable number.

55495805 is a deficient number, since it is larger than the sum of its proper divisors (11485147).

55495805 is a wasteful number, since it uses less digits than its factorization.

55495805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64335.

The product of its (nonzero) digits is 180000, while the sum is 41.

The square root of 55495805 is about 7449.5506575900. The cubic root of 55495805 is about 381.4345704899.

The spelling of 55495805 in words is "fifty-five million, four hundred ninety-five thousand, eight hundred five".