55130555 has 16 divisors (see below), whose sum is σ = 70143744. Its totient is φ = 41523840.

The previous prime is 55130539. The next prime is 55130557. The reversal of 55130555 is 55503155.

It is not a de Polignac number, because 55130555 - 2⁴ = 55130539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55130557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 929 + ... + 10541.

It is an arithmetic number, because the mean of its divisors is an integer number (4383984).

Almost surely, 2^55130555 is an apocalyptic number.

55130555 is a deficient number, since it is larger than the sum of its proper divisors (15013189).

55130555 is a wasteful number, since it uses less digits than its factorization.

55130555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9686.

The product of its (nonzero) digits is 9375, while the sum is 29.

The square root of 55130555 is about 7424.9952861938. The cubic root of 55130555 is about 380.5959140327.

The spelling of 55130555 in words is "fifty-five million, one hundred thirty thousand, five hundred fifty-five".