54563574021 has 16 divisors (see below), whose sum is σ = 81925367808. Its totient is φ = 32002095600.

The previous prime is 54563574019. The next prime is 54563574049. The reversal of 54563574021 is 12047536545.

It is not a de Polignac number, because 54563574021 - 2¹ = 54563574019 is a prime.

It is a super-2 number, since 2×54563574021² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54563584021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26667391 + ... + 26669436.

It is an arithmetic number, because the mean of its divisors is an integer number (5120335488).

Almost surely, 2^54563574021 is an apocalyptic number.

It is an amenable number.

54563574021 is a deficient number, since it is larger than the sum of its proper divisors (27361793787).

54563574021 is a wasteful number, since it uses less digits than its factorization.

54563574021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53336872.

The product of its (nonzero) digits is 504000, while the sum is 42.

The spelling of 54563574021 in words is "fifty-four billion, five hundred sixty-three million, five hundred seventy-four thousand, twenty-one".