55607513173 has 4 divisors (see below), whose sum is σ = 55622270860. Its totient is φ = 55592755488.

The previous prime is 55607513147. The next prime is 55607513177. The reversal of 55607513173 is 37131570655.

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 29344717809 + 26262795364 = 171303^2 + 162058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55607513173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55607513177) 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, 7373190 + ... + 7380727.

It is an arithmetic number, because the mean of its divisors is an integer number (13905567715).

Almost surely, 2^55607513173 is an apocalyptic number.

It is an amenable number.

55607513173 is a deficient number, since it is larger than the sum of its proper divisors (14757687).

55607513173 is a wasteful number, since it uses less digits than its factorization.

55607513173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14757686.

The product of its (nonzero) digits is 330750, while the sum is 43.

The spelling of 55607513173 in words is "fifty-five billion, six hundred seven million, five hundred thirteen thousand, one hundred seventy-three".