54040310561 has 4 divisors (see below), whose sum is σ = 54157535124. Its totient is φ = 53923086000.

The previous prime is 54040310483. The next prime is 54040310573. The reversal of 54040310561 is 16501304045.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16501304045 = 5 ⋅3300260809.

It can be written as a sum of positive squares in 2 ways, for example, as 39092802961 + 14947507600 = 197719^2 + 122260^2 .

It is a cyclic number.

It is not a de Polignac number, because 54040310561 - 2¹⁴ = 54040294177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54040315561) 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, 58611590 + ... + 58612511.

It is an arithmetic number, because the mean of its divisors is an integer number (13539383781).

Almost surely, 2^54040310561 is an apocalyptic number.

It is an amenable number.

54040310561 is a deficient number, since it is larger than the sum of its proper divisors (117224563).

54040310561 is a wasteful number, since it uses less digits than its factorization.

54040310561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117224562.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 54040310561 in words is "fifty-four billion, forty million, three hundred ten thousand, five hundred sixty-one".