55591736841 has 9 divisors (see below), whose sum is σ = 80300197159. Its totient is φ = 37060686336.

The previous prime is 55591736831. The next prime is 55591736843. The reversal of 55591736841 is 14863719555.

The square root of 55591736841 is 235779.

It is a perfect power (a square), and thus also a powerful number.

55591736841 is a `hidden beast` number, since 5 + 5 + 591 + 7 + 3 + 6 + 8 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25765065225 + 29826671616 = 160515^2 + 172704^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 55591736841 - 2²¹ = 55589639689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55591736843) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 668041 + ... + 746633.

Almost surely, 2^55591736841 is an apocalyptic number.

55591736841 is the 235779-th square number.

55591736841 is the 117890-th centered octagonal number.

It is an amenable number.

55591736841 is a deficient number, since it is larger than the sum of its proper divisors (24708460318).

55591736841 is an frugal number, since it uses more digits than its factorization.

55591736841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157192 (or 78596 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 54.

It can be divided in two parts, 5559 and 1736841, that added together give a square (1742400 = 1320²).

The spelling of 55591736841 in words is "fifty-five billion, five hundred ninety-one million, seven hundred thirty-six thousand, eight hundred forty-one".