55087173247 has 6 divisors (see below), whose sum is σ = 57586402832. Its totient is φ = 52692078252.

The previous prime is 55087173217. The next prime is 55087173283. The reversal of 55087173247 is 74237178055.

It is a happy number.

It is not a de Polignac number, because 55087173247 - 2³¹ = 52939689599 is a prime.

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 55087173247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55087173217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52066743 + ... + 52067800.

Almost surely, 2^55087173247 is an apocalyptic number.

55087173247 is a deficient number, since it is larger than the sum of its proper divisors (2499229585).

55087173247 is a wasteful number, since it uses less digits than its factorization.

55087173247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104134589 (or 104134566 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 49.

The spelling of 55087173247 in words is "fifty-five billion, eighty-seven million, one hundred seventy-three thousand, two hundred forty-seven".