54171253513 has 4 divisors (see below), whose sum is σ = 58338273028. Its totient is φ = 50004234000.

The previous prime is 54171253427. The next prime is 54171253517. The reversal of 54171253513 is 31535217145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31535217145 = 5 ⋅6307043429.

It can be written as a sum of positive squares in 2 ways, for example, as 3594841849 + 50576411664 = 59957^2 + 224892^2 .

It is a cyclic number.

It is not a de Polignac number, because 54171253513 - 2¹³ = 54171245321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54171253517) 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, 2083509738 + ... + 2083509763.

It is an arithmetic number, because the mean of its divisors is an integer number (14584568257).

Almost surely, 2^54171253513 is an apocalyptic number.

It is an amenable number.

54171253513 is a deficient number, since it is larger than the sum of its proper divisors (4167019515).

54171253513 is a wasteful number, since it uses less digits than its factorization.

54171253513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167019514.

The product of its digits is 63000, while the sum is 37.

The spelling of 54171253513 in words is "fifty-four billion, one hundred seventy-one million, two hundred fifty-three thousand, five hundred thirteen".