55320130 has 16 divisors (see below), whose sum is σ = 100941624. Its totient is φ = 21824640.

The previous prime is 55320101. The next prime is 55320131. The reversal of 55320130 is 3102355.

It can be written as a sum of positive squares in 4 ways, for example, as 38105929 + 17214201 = 6173^2 + 4149^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55320098 and 55320107.

It is not an unprimeable number, because it can be changed into a prime (55320131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37161 + ... + 38620.

Almost surely, 2^55320130 is an apocalyptic number.

55320130 is a deficient number, since it is larger than the sum of its proper divisors (45621494).

55320130 is a wasteful number, since it uses less digits than its factorization.

55320130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75861.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 55320130 is about 7437.7503319216. The cubic root of 55320130 is about 381.0316610619.

Adding to 55320130 its reverse (3102355), we get a palindrome (58422485).

The spelling of 55320130 in words is "fifty-five million, three hundred twenty thousand, one hundred thirty".