54656078621 has 8 divisors (see below), whose sum is σ = 54856192824. Its totient is φ = 54456330240.

The previous prime is 54656078591. The next prime is 54656078647. The reversal of 54656078621 is 12687065645.

54656078621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20509104100 + 34146974521 = 143210^2 + 184789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54656078621 - 2¹⁸ = 54655816477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54656078621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54656098621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209711 + ... + 391523.

It is an arithmetic number, because the mean of its divisors is an integer number (6857024103).

Almost surely, 2^54656078621 is an apocalyptic number.

It is an amenable number.

54656078621 is a deficient number, since it is larger than the sum of its proper divisors (200114203).

54656078621 is a wasteful number, since it uses less digits than its factorization.

54656078621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182911.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 54656078621 in words is "fifty-four billion, six hundred fifty-six million, seventy-eight thousand, six hundred twenty-one".