55236144 has 40 divisors (see below), whose sum is σ = 142959600. Its totient is φ = 18377728.

The previous prime is 55236127. The next prime is 55236149. The reversal of 55236144 is 44163255.

It is not an unprimeable number, because it can be changed into a prime (55236149) 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, 49804 + ... + 50900.

It is an arithmetic number, because the mean of its divisors is an integer number (3573990).

Almost surely, 2^55236144 is an apocalyptic number.

It is an amenable number.

55236144 is an abundant number, since it is smaller than the sum of its proper divisors (87723456).

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

55236144 is a wasteful number, since it uses less digits than its factorization.

55236144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157 (or 2151 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 55236144 is about 7432.1022597916. The cubic root of 55236144 is about 380.8387383207.

Adding to 55236144 its reverse (44163255), we get a palindrome (99399399).

The spelling of 55236144 in words is "fifty-five million, two hundred thirty-six thousand, one hundred forty-four".