55130019 has 16 divisors (see below), whose sum is σ = 84192000. Its totient is φ = 31433760.

The previous prime is 55130003. The next prime is 55130051. The reversal of 55130019 is 91003155.

It is not a de Polignac number, because 55130019 - 2⁴ = 55130003 is a prime.

It is a super-2 number, since 2×55130019² = 6078637989880722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55130219) 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, 7849 + ... + 13109.

It is an arithmetic number, because the mean of its divisors is an integer number (5262000).

Almost surely, 2^55130019 is an apocalyptic number.

55130019 is a deficient number, since it is larger than the sum of its proper divisors (29061981).

55130019 is a wasteful number, since it uses less digits than its factorization.

55130019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770.

The product of its (nonzero) digits is 675, while the sum is 24.

The square root of 55130019 is about 7424.9591918070. The cubic root of 55130019 is about 380.5946805964.

The spelling of 55130019 in words is "fifty-five million, one hundred thirty thousand, nineteen".