54857085827 has 4 divisors (see below), whose sum is σ = 55009891440. Its totient is φ = 54704280216.

The previous prime is 54857085793. The next prime is 54857085887. The reversal of 54857085827 is 72858075845.

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 54857085827 - 2¹⁸ = 54856823683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54857085887) 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, 76402268 + ... + 76402985.

It is an arithmetic number, because the mean of its divisors is an integer number (13752472860).

Almost surely, 2^54857085827 is an apocalyptic number.

54857085827 is a deficient number, since it is larger than the sum of its proper divisors (152805613).

54857085827 is a wasteful number, since it uses less digits than its factorization.

54857085827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152805612.

The product of its (nonzero) digits is 25088000, while the sum is 59.

The spelling of 54857085827 in words is "fifty-four billion, eight hundred fifty-seven million, eighty-five thousand, eight hundred twenty-seven".