55671600553 has 4 divisors (see below), whose sum is σ = 55672246980. Its totient is φ = 55670954128.

The previous prime is 55671600539. The next prime is 55671600557. The reversal of 55671600553 is 35500617655.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 26970835984 + 28700764569 = 164228^2 + 169413^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55671600553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55671600557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169738 + ... + 374371.

It is an arithmetic number, because the mean of its divisors is an integer number (13918061745).

Almost surely, 2^55671600553 is an apocalyptic number.

It is an amenable number.

55671600553 is a deficient number, since it is larger than the sum of its proper divisors (646427).

55671600553 is a wasteful number, since it uses less digits than its factorization.

55671600553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646426.

The product of its (nonzero) digits is 472500, while the sum is 43.

The spelling of 55671600553 in words is "fifty-five billion, six hundred seventy-one million, six hundred thousand, five hundred fifty-three".