54771004661 has 4 divisors (see below), whose sum is σ = 54771834732. Its totient is φ = 54770174592.

The previous prime is 54771004649. The next prime is 54771004669. The reversal of 54771004661 is 16640017745.

54771004661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20165704036 + 34605300625 = 142006^2 + 186025^2 .

It is a cyclic number.

It is not a de Polignac number, because 54771004661 - 2¹⁴ = 54770988277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54771004669) 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, 306620 + ... + 451173.

It is an arithmetic number, because the mean of its divisors is an integer number (13692958683).

Almost surely, 2^54771004661 is an apocalyptic number.

It is an amenable number.

54771004661 is a deficient number, since it is larger than the sum of its proper divisors (830071).

54771004661 is an equidigital number, since it uses as much as digits as its factorization.

54771004661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830070.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 54771004661 in words is "fifty-four billion, seven hundred seventy-one million, four thousand, six hundred sixty-one".