55172343543 has 8 divisors (see below), whose sum is σ = 73619673456. Its totient is φ = 36753288000.

The previous prime is 55172343533. The next prime is 55172343587. The reversal of 55172343543 is 34534327155.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55172343543 - 2¹² = 55172339447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55172343495 and 55172343504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55172343533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7064038 + ... + 7071843.

It is an arithmetic number, because the mean of its divisors is an integer number (9202459182).

Almost surely, 2^55172343543 is an apocalyptic number.

55172343543 is a deficient number, since it is larger than the sum of its proper divisors (18447329913).

55172343543 is a wasteful number, since it uses less digits than its factorization.

55172343543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14137185.

The product of its digits is 756000, while the sum is 42.

The spelling of 55172343543 in words is "fifty-five billion, one hundred seventy-two million, three hundred forty-three thousand, five hundred forty-three".