55321573046861 has 4 divisors (see below), whose sum is σ = 60350806960224. Its totient is φ = 50292339133500.

The previous prime is 55321573046851. The next prime is 55321573046917. The reversal of 55321573046861 is 16864037512355.

55321573046861 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55321573046861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55321573046797 and 55321573046806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55321573046851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2514616956665 + ... + 2514616956686.

It is an arithmetic number, because the mean of its divisors is an integer number (15087701740056).

Almost surely, 2^{55321573046861} is an apocalyptic number.

It is an amenable number.

55321573046861 is a deficient number, since it is larger than the sum of its proper divisors (5029233913363).

55321573046861 is a wasteful number, since it uses less digits than its factorization.

55321573046861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5029233913362.

The product of its (nonzero) digits is 18144000, while the sum is 56.

The spelling of 55321573046861 in words is "fifty-five trillion, three hundred twenty-one billion, five hundred seventy-three million, forty-six thousand, eight hundred sixty-one".