55243512 has 32 divisors (see below), whose sum is σ = 153454800. Its totient is φ = 18414432.

The previous prime is 55243511. The next prime is 55243541. The reversal of 55243512 is 21534255.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55243511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127663 + ... + 128094.

Almost surely, 2^55243512 is an apocalyptic number.

It is an amenable number.

55243512 is an abundant number, since it is smaller than the sum of its proper divisors (98211288).

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

55243512 is a wasteful number, since it uses less digits than its factorization.

55243512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255772 (or 255762 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 55243512 is about 7432.5979307373. The cubic root of 55243512 is about 380.8556710442.

Adding to 55243512 its reverse (21534255), we get a palindrome (76777767).

It can be divided in two parts, 55243 and 512, that added together give a palindrome (55755).

The spelling of 55243512 in words is "fifty-five million, two hundred forty-three thousand, five hundred twelve".