55451330 has 16 divisors (see below), whose sum is σ = 108886464. Its totient is φ = 20164080.

The previous prime is 55451317. The next prime is 55451339. The reversal of 55451330 is 3315455.

55451330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55451330.

It is not an unprimeable number, because it can be changed into a prime (55451339) by changing a digit.

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, 251942 + ... + 252161.

It is an arithmetic number, because the mean of its divisors is an integer number (6805404).

Almost surely, 2^55451330 is an apocalyptic number.

55451330 is a deficient number, since it is larger than the sum of its proper divisors (53435134).

55451330 is a wasteful number, since it uses less digits than its factorization.

55451330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504121.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 55451330 is about 7446.5649799085. The cubic root of 55451330 is about 381.3326478531.

Adding to 55451330 its reverse (3315455), we get a palindrome (58766785).

The spelling of 55451330 in words is "fifty-five million, four hundred fifty-one thousand, three hundred thirty".