55345330 has 16 divisors (see below), whose sum is σ = 100408320. Its totient is φ = 21963312.

The previous prime is 55345289. The next prime is 55345331. The reversal of 55345330 is 3354355.

It is not an unprimeable number, because it can be changed into a prime (55345331) 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, 20520 + ... + 23059.

It is an arithmetic number, because the mean of its divisors is an integer number (6275520).

Almost surely, 2^55345330 is an apocalyptic number.

55345330 is a deficient number, since it is larger than the sum of its proper divisors (45062990).

55345330 is a wasteful number, since it uses less digits than its factorization.

55345330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43713.

The product of its (nonzero) digits is 13500, while the sum is 28.

The square root of 55345330 is about 7439.4441996698. Note that the first 3 decimals coincide. The cubic root of 55345330 is about 381.0895094450.

Adding to 55345330 its reverse (3354355), we get a palindrome (58699685).

The spelling of 55345330 in words is "fifty-five million, three hundred forty-five thousand, three hundred thirty".