55224531 has 16 divisors (see below), whose sum is σ = 83203200. Its totient is φ = 36191304.

The previous prime is 55224529. The next prime is 55224571. The reversal of 55224531 is 13542255.

It is a happy number.

55224531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55224531 - 2¹ = 55224529 is a prime.

It is a super-2 number, since 2×55224531² = 6099497648339922, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 55224495 and 55224504.

It is not an unprimeable number, because it can be changed into a prime (55224511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15741 + ... + 18926.

It is an arithmetic number, because the mean of its divisors is an integer number (5200200).

Almost surely, 2^55224531 is an apocalyptic number.

55224531 is a deficient number, since it is larger than the sum of its proper divisors (27978669).

55224531 is a wasteful number, since it uses less digits than its factorization.

55224531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34735 (or 34729 counting only the distinct ones).

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

The square root of 55224531 is about 7431.3209458346. The cubic root of 55224531 is about 380.8120469194.

Adding to 55224531 its reverse (13542255), we get a palindrome (68766786).

It can be divided in two parts, 55224 and 531, that added together give a palindrome (55755).

The spelling of 55224531 in words is "fifty-five million, two hundred twenty-four thousand, five hundred thirty-one".