55811480579 has 4 divisors (see below), whose sum is σ = 56250941184. Its totient is φ = 55372019976.

The previous prime is 55811480567. The next prime is 55811480581. The reversal of 55811480579 is 97508411855.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55811480579 is a prime.

It is a super-2 number, since 2×55811480579² (a number of 22 digits) contains 22 as substring.

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 55811480579.

It is not an unprimeable number, because it can be changed into a prime (55811480279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219730112 + ... + 219730365.

It is an arithmetic number, because the mean of its divisors is an integer number (14062735296).

Almost surely, 2^55811480579 is an apocalyptic number.

55811480579 is a deficient number, since it is larger than the sum of its proper divisors (439460605).

55811480579 is a wasteful number, since it uses less digits than its factorization.

55811480579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439460604.

The product of its (nonzero) digits is 2016000, while the sum is 53.

The spelling of 55811480579 in words is "fifty-five billion, eight hundred eleven million, four hundred eighty thousand, five hundred seventy-nine".