55306330 has 16 divisors (see below), whose sum is σ = 99657504. Its totient is φ = 22098960.

The previous prime is 55306327. The next prime is 55306331. The reversal of 55306330 is 3360355.

It is a junction number, because it is equal to n+sod(n) for n = 55306295 and 55306304.

It is not an unprimeable number, because it can be changed into a prime (55306331) 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, 9349 + ... + 14071.

It is an arithmetic number, because the mean of its divisors is an integer number (6228594).

Almost surely, 2^55306330 is an apocalyptic number.

55306330 is a deficient number, since it is larger than the sum of its proper divisors (44351174).

55306330 is a wasteful number, since it uses less digits than its factorization.

55306330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5901.

The product of its (nonzero) digits is 4050, while the sum is 25.

The square root of 55306330 is about 7436.8225741912. The cubic root of 55306330 is about 380.9999747407. Note that the first 4 decimals are identical.

Adding to 55306330 its reverse (3360355), we get a palindrome (58666685).

The spelling of 55306330 in words is "fifty-five million, three hundred six thousand, three hundred thirty".