55130404 has 24 divisors (see below), whose sum is σ = 112952448. Its totient is φ = 23050560.

The previous prime is 55130401. The next prime is 55130417. The reversal of 55130404 is 40403155.

It is a super-2 number, since 2×55130404² = 6078722890406432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55130401) 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, 22864 + ... + 25159.

It is an arithmetic number, because the mean of its divisors is an integer number (4706352).

Almost surely, 2^55130404 is an apocalyptic number.

It is an amenable number.

55130404 is an abundant number, since it is smaller than the sum of its proper divisors (57822044).

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

55130404 is a wasteful number, since it uses less digits than its factorization.

55130404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48075 (or 48073 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55130404 is about 7424.9851178302. The cubic root of 55130404 is about 380.5955665542.

Adding to 55130404 its reverse (40403155), we get a palindrome (95533559).

The spelling of 55130404 in words is "fifty-five million, one hundred thirty thousand, four hundred four".