55424330 has 48 divisors (see below), whose sum is σ = 113486184. Its totient is φ = 19370880.

The previous prime is 55424323. The next prime is 55424351. The reversal of 55424330 is 3342455.

It can be written as a sum of positive squares in 4 ways, for example, as 46526041 + 8898289 = 6821^2 + 2983^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 55424330.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46340 + ... + 47520.

Almost surely, 2^55424330 is an apocalyptic number.

55424330 is an abundant number, since it is smaller than the sum of its proper divisors (58061854).

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

55424330 is a wasteful number, since it uses less digits than its factorization.

55424330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 55424330 is about 7444.7518427413. The cubic root of 55424330 is about 381.2707458029.

Adding to 55424330 its reverse (3342455), we get a palindrome (58766785).

The spelling of 55424330 in words is "fifty-five million, four hundred twenty-four thousand, three hundred thirty".