55891725847 has 4 divisors (see below), whose sum is σ = 55892246200. Its totient is φ = 55891205496.

The previous prime is 55891725709. The next prime is 55891725871. The reversal of 55891725847 is 74852719855.

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 is a cyclic number.

It is not a de Polignac number, because 55891725847 - 2¹¹ = 55891723799 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 (55891725947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32853 + ... + 335950.

It is an arithmetic number, because the mean of its divisors is an integer number (13973061550).

Almost surely, 2^55891725847 is an apocalyptic number.

55891725847 is a deficient number, since it is larger than the sum of its proper divisors (520353).

55891725847 is a wasteful number, since it uses less digits than its factorization.

55891725847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520352.

The product of its digits is 28224000, while the sum is 61.

The spelling of 55891725847 in words is "fifty-five billion, eight hundred ninety-one million, seven hundred twenty-five thousand, eight hundred forty-seven".