55240437205 has 8 divisors (see below), whose sum is σ = 66398825304. Its totient is φ = 44118816000.

The previous prime is 55240437191. The next prime is 55240437247. The reversal of 55240437205 is 50273404255.

It can be written as a sum of positive squares in 4 ways, for example, as 18498448081 + 36741989124 = 136009^2 + 191682^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-55240437205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9188416 + ... + 9194425.

It is an arithmetic number, because the mean of its divisors is an integer number (8299853163).

Almost surely, 2^55240437205 is an apocalyptic number.

It is an amenable number.

55240437205 is a deficient number, since it is larger than the sum of its proper divisors (11158388099).

55240437205 is a wasteful number, since it uses less digits than its factorization.

55240437205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18383447.

The product of its (nonzero) digits is 168000, while the sum is 37.

The spelling of 55240437205 in words is "fifty-five billion, two hundred forty million, four hundred thirty-seven thousand, two hundred five".