54102612821 has 4 divisors (see below), whose sum is σ = 54124230432. Its totient is φ = 54080995212.

The previous prime is 54102612797. The next prime is 54102612827. The reversal of 54102612821 is 12821620145.

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 54102612821 - 2¹⁴ = 54102596437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54102612827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10805051 + ... + 10810056.

It is an arithmetic number, because the mean of its divisors is an integer number (13531057608).

Almost surely, 2^54102612821 is an apocalyptic number.

It is an amenable number.

54102612821 is a deficient number, since it is larger than the sum of its proper divisors (21617611).

54102612821 is a wasteful number, since it uses less digits than its factorization.

54102612821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21617610.

The product of its (nonzero) digits is 7680, while the sum is 32.

The spelling of 54102612821 in words is "fifty-four billion, one hundred two million, six hundred twelve thousand, eight hundred twenty-one".