55281430 has 16 divisors (see below), whose sum is σ = 99603504. Its totient is φ = 22091040.

The previous prime is 55281389. The next prime is 55281437. The reversal of 55281430 is 3418255.

55281430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55281437) 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, 11809 + ... + 15811.

It is an arithmetic number, because the mean of its divisors is an integer number (6225219).

Almost surely, 2^55281430 is an apocalyptic number.

55281430 is a deficient number, since it is larger than the sum of its proper divisors (44322074).

55281430 is a wasteful number, since it uses less digits than its factorization.

55281430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 55281430 is about 7435.1482836592. The cubic root of 55281430 is about 380.9427882580.

Adding to 55281430 its reverse (3418255), we get a palindrome (58699685).

The spelling of 55281430 in words is "fifty-five million, two hundred eighty-one thousand, four hundred thirty".