54540020 has 24 divisors (see below), whose sum is σ = 115987200. Its totient is φ = 21539232.

The previous prime is 54540007. The next prime is 54540037. The reversal of 54540020 is 2004545.

It is a happy number.

It is a super-2 number, since 2×54540020² = 5949227563200800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 54539974 and 54540001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15680 + ... + 18839.

It is an arithmetic number, because the mean of its divisors is an integer number (4832800).

Almost surely, 2^54540020 is an apocalyptic number.

It is an amenable number.

54540020 is an abundant number, since it is smaller than the sum of its proper divisors (61447180).

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

54540020 is a wasteful number, since it uses less digits than its factorization.

54540020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34607 (or 34605 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 54540020 is about 7385.1215291287. The cubic root of 54540020 is about 379.2321058142.

Adding to 54540020 its reverse (2004545), we get a palindrome (56544565).

The spelling of 54540020 in words is "fifty-four million, five hundred forty thousand, twenty".