55563330 has 16 divisors (see below), whose sum is σ = 133352064. Its totient is φ = 14816880.

The previous prime is 55563317. The next prime is 55563367. The reversal of 55563330 is 3336555.

55563330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1852111 = 55563330 / (5 + 5 + 5 + 6 + 3 + 3 + 3 + 0).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 926026 + ... + 926085.

It is an arithmetic number, because the mean of its divisors is an integer number (8334504).

Almost surely, 2^55563330 is an apocalyptic number.

55563330 is an abundant number, since it is smaller than the sum of its proper divisors (77788734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55563330 is a wasteful number, since it uses less digits than its factorization.

55563330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852121.

The product of its (nonzero) digits is 20250, while the sum is 30.

The square root of 55563330 is about 7454.0814323430. The cubic root of 55563330 is about 381.5892123888.

Adding to 55563330 its reverse (3336555), we get a palindrome (58899885).

The spelling of 55563330 in words is "fifty-five million, five hundred sixty-three thousand, three hundred thirty".