55230724 has 12 divisors (see below), whose sum is σ = 97303500. Its totient is φ = 27429728.

The previous prime is 55230709. The next prime is 55230821. The reversal of 55230724 is 42703255.

It can be written as a sum of positive squares in 2 ways, for example, as 9424900 + 45805824 = 3070^2 + 6768^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55230692 and 55230701.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45739 + ... + 46930.

It is an arithmetic number, because the mean of its divisors is an integer number (8108625).

Almost surely, 2^55230724 is an apocalyptic number.

It is an amenable number.

55230724 is a deficient number, since it is larger than the sum of its proper divisors (42072776).

55230724 is a wasteful number, since it uses less digits than its factorization.

55230724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92822 (or 92820 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 55230724 is about 7431.7376164663. The cubic root of 55230724 is about 380.8262814200.

Adding to 55230724 its reverse (42703255), we get a palindrome (97933979).

The spelling of 55230724 in words is "fifty-five million, two hundred thirty thousand, seven hundred twenty-four".