55133657473 has 4 divisors (see below), whose sum is σ = 56478380868. Its totient is φ = 53788934080.

The previous prime is 55133657431. The next prime is 55133657519. The reversal of 55133657473 is 37475633155.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25751583729 + 29382073744 = 160473^2 + 171412^2 .

It is a cyclic number.

It is not a de Polignac number, because 55133657473 - 2¹⁷ = 55133526401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55133657773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672361636 + ... + 672361717.

It is an arithmetic number, because the mean of its divisors is an integer number (14119595217).

Almost surely, 2^55133657473 is an apocalyptic number.

It is an amenable number.

55133657473 is a deficient number, since it is larger than the sum of its proper divisors (1344723395).

55133657473 is a wasteful number, since it uses less digits than its factorization.

55133657473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344723394.

The product of its digits is 3969000, while the sum is 49.

The spelling of 55133657473 in words is "fifty-five billion, one hundred thirty-three million, six hundred fifty-seven thousand, four hundred seventy-three".