54512240 has 20 divisors (see below), whose sum is σ = 126741144. Its totient is φ = 21804864.

The previous prime is 54512221. The next prime is 54512243. The reversal of 54512240 is 4221545.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54512243) 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, 340622 + ... + 340781.

Almost surely, 2^54512240 is an apocalyptic number.

It is an amenable number.

54512240 is an abundant number, since it is smaller than the sum of its proper divisors (72228904).

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

54512240 is a wasteful number, since it uses less digits than its factorization.

54512240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681416 (or 681410 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 54512240 is about 7383.2404809812. The cubic root of 54512240 is about 379.1677074936.

Adding to 54512240 its reverse (4221545), we get a palindrome (58733785).

The spelling of 54512240 in words is "fifty-four million, five hundred twelve thousand, two hundred forty".