54251645519 has 4 divisors (see below), whose sum is σ = 54253272360. Its totient is φ = 54250018680.

The previous prime is 54251645501. The next prime is 54251645527. The reversal of 54251645519 is 91554615245.

54251645519 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54251645519 is a prime.

It is a super-3 number, since 3×54251645519³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54251645599) 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, 762329 + ... + 830450.

It is an arithmetic number, because the mean of its divisors is an integer number (13563318090).

Almost surely, 2^54251645519 is an apocalyptic number.

54251645519 is a deficient number, since it is larger than the sum of its proper divisors (1626841).

54251645519 is a wasteful number, since it uses less digits than its factorization.

54251645519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626840.

The product of its digits is 1080000, while the sum is 47.

The spelling of 54251645519 in words is "fifty-four billion, two hundred fifty-one million, six hundred forty-five thousand, five hundred nineteen".