55130427 has 24 divisors (see below), whose sum is σ = 87862320. Its totient is φ = 33031680.

The previous prime is 55130423. The next prime is 55130443. The reversal of 55130427 is 72403155.

It is a happy number.

It is not a de Polignac number, because 55130427 - 2² = 55130423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55130427.

It is not an unprimeable number, because it can be changed into a prime (55130423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5683 + ... + 11939.

It is an arithmetic number, because the mean of its divisors is an integer number (3660930).

Almost surely, 2^55130427 is an apocalyptic number.

55130427 is a deficient number, since it is larger than the sum of its proper divisors (32731893).

55130427 is a wasteful number, since it uses less digits than its factorization.

55130427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6363 (or 6360 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 55130427 is about 7424.9866666547. The cubic root of 55130427 is about 380.5956194815.

The spelling of 55130427 in words is "fifty-five million, one hundred thirty thousand, four hundred twenty-seven".