54431220 has 48 divisors (see below), whose sum is σ = 152949888. Its totient is φ = 14463360.

The previous prime is 54431213. The next prime is 54431233. The reversal of 54431220 is 2213445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17202 + ... + 20118.

It is an arithmetic number, because the mean of its divisors is an integer number (3186456).

Almost surely, 2^54431220 is an apocalyptic number.

It is an amenable number.

54431220 is an abundant number, since it is smaller than the sum of its proper divisors (98518668).

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

54431220 is a wasteful number, since it uses less digits than its factorization.

54431220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240 (or 3238 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 54431220 is about 7377.7516900476. The cubic root of 54431220 is about 378.9797656066.

Adding to 54431220 its reverse (2213445), we get a palindrome (56644665).

The spelling of 54431220 in words is "fifty-four million, four hundred thirty-one thousand, two hundred twenty".