55405130 has 32 divisors (see below), whose sum is σ = 110652480. Its totient is φ = 19803520.

The previous prime is 55405127. The next prime is 55405157. The reversal of 55405130 is 3150455.

55405130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55405096 and 55405105.

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 15 ways as a sum of consecutive naturals, for example, 2222 + ... + 10758.

It is an arithmetic number, because the mean of its divisors is an integer number (3457890).

Almost surely, 2^55405130 is an apocalyptic number.

55405130 is a deficient number, since it is larger than the sum of its proper divisors (55247350).

55405130 is a wasteful number, since it uses less digits than its factorization.

55405130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8614.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 55405130 is about 7443.4622320530. The cubic root of 55405130 is about 381.2267143352.

Adding to 55405130 its reverse (3150455), we get a palindrome (58555585).

The spelling of 55405130 in words is "fifty-five million, four hundred five thousand, one hundred thirty".