54213204520 has 16 divisors (see below), whose sum is σ = 121979710260. Its totient is φ = 21685281792.

The previous prime is 54213204517. The next prime is 54213204533. The reversal of 54213204520 is 2540231245.

It can be written as a sum of positive squares in 2 ways, for example, as 52227789156 + 1985415364 = 228534^2 + 44558^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677665017 + ... + 677665096.

Almost surely, 2^54213204520 is an apocalyptic number.

It is an amenable number.

54213204520 is an abundant number, since it is smaller than the sum of its proper divisors (67766505740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54213204520 is a wasteful number, since it uses less digits than its factorization.

54213204520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355330124 (or 1355330120 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 54213204520 its reverse (2540231245), we get a palindrome (56753435765).

The spelling of 54213204520 in words is "fifty-four billion, two hundred thirteen million, two hundred four thousand, five hundred twenty".