55431054427547 has 4 divisors (see below), whose sum is σ = 55433573699400. Its totient is φ = 55428535155696.

The previous prime is 55431054427457. The next prime is 55431054427561. The reversal of 55431054427547 is 74572445013455.

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

It is a cyclic number.

It is not a de Polignac number, because 55431054427547 - 2⁴⁰ = 54331542799771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55431054427492 and 55431054427501.

It is not an unprimeable number, because it can be changed into a prime (55431054427747) 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, 1259602922 + ... + 1259646927.

It is an arithmetic number, because the mean of its divisors is an integer number (13858393424850).

Almost surely, 2^{55431054427547} is an apocalyptic number.

55431054427547 is a deficient number, since it is larger than the sum of its proper divisors (2519271853).

55431054427547 is a wasteful number, since it uses less digits than its factorization.

55431054427547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519271852.

The product of its (nonzero) digits is 47040000, while the sum is 56.

The spelling of 55431054427547 in words is "fifty-five trillion, four hundred thirty-one billion, fifty-four million, four hundred twenty-seven thousand, five hundred forty-seven".