54564273781 has 4 divisors (see below), whose sum is σ = 54571724064. Its totient is φ = 54556823500.

The previous prime is 54564273761. The next prime is 54564273817. The reversal of 54564273781 is 18737246545.

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 not a de Polignac number, because 54564273781 - 2¹⁵ = 54564241013 is a prime.

It is a super-2 number, since 2×54564273781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54564273761) 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, 3714145 + ... + 3728806.

It is an arithmetic number, because the mean of its divisors is an integer number (13642931016).

Almost surely, 2^54564273781 is an apocalyptic number.

It is an amenable number.

54564273781 is a deficient number, since it is larger than the sum of its proper divisors (7450283).

54564273781 is an equidigital number, since it uses as much as digits as its factorization.

54564273781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7450282.

The product of its digits is 5644800, while the sum is 52.

The spelling of 54564273781 in words is "fifty-four billion, five hundred sixty-four million, two hundred seventy-three thousand, seven hundred eighty-one".