55216324 has 24 divisors (see below), whose sum is σ = 98461440. Its totient is φ = 27088704.

The previous prime is 55216313. The next prime is 55216327. The reversal of 55216324 is 42361255.

It is a junction number, because it is equal to n+sod(n) for n = 55216292 and 55216301.

It is not an unprimeable number, because it can be changed into a prime (55216327) 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, 76437 + ... + 77155.

It is an arithmetic number, because the mean of its divisors is an integer number (4102560).

Almost surely, 2^55216324 is an apocalyptic number.

It is an amenable number.

55216324 is a deficient number, since it is larger than the sum of its proper divisors (43245116).

55216324 is a wasteful number, since it uses less digits than its factorization.

55216324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1057 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 55216324 is about 7430.7687354674. The cubic root of 55216324 is about 380.7931816359.

Adding to 55216324 its reverse (42361255), we get a palindrome (97577579).

The spelling of 55216324 in words is "fifty-five million, two hundred sixteen thousand, three hundred twenty-four".