54520021524 has 12 divisors (see below), whose sum is σ = 127213383584. Its totient is φ = 18173340504.

The previous prime is 54520021487. The next prime is 54520021529. The reversal of 54520021524 is 42512002545.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 54520021491 and 54520021500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54520021529) 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, 2271667552 + ... + 2271667575.

Almost surely, 2^54520021524 is an apocalyptic number.

It is an amenable number.

54520021524 is an abundant number, since it is smaller than the sum of its proper divisors (72693362060).

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

54520021524 is a wasteful number, since it uses less digits than its factorization.

54520021524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4543335134 (or 4543335132 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 54520021524 in words is "fifty-four billion, five hundred twenty million, twenty-one thousand, five hundred twenty-four".