54140420 has 24 divisors (see below), whose sum is σ = 113967000. Its totient is φ = 21604352.

The previous prime is 54140407. The next prime is 54140473. The reversal of 54140420 is 2404145.

It can be written as a sum of positive squares in 4 ways, for example, as 19377604 + 34762816 = 4402^2 + 5896^2 .

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 = 54140392 and 54140401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5966 + ... + 11994.

It is an arithmetic number, because the mean of its divisors is an integer number (4748625).

Almost surely, 2^54140420 is an apocalyptic number.

It is an amenable number.

54140420 is an abundant number, since it is smaller than the sum of its proper divisors (59826580).

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

54140420 is a wasteful number, since it uses less digits than its factorization.

54140420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6487 (or 6485 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 54140420 is about 7358.0173960110. The cubic root of 54140420 is about 378.3036575316.

Adding to 54140420 its reverse (2404145), we get a palindrome (56544565).

The spelling of 54140420 in words is "fifty-four million, one hundred forty thousand, four hundred twenty".