55130878 has 16 divisors (see below), whose sum is σ = 90362880. Its totient is φ = 25018200.

The previous prime is 55130863. The next prime is 55130893. The reversal of 55130878 is 87803155.

It is an interprime number because it is at equal distance from previous prime (55130863) and next prime (55130893).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14563 + ... + 17953.

It is an arithmetic number, because the mean of its divisors is an integer number (5647680).

Almost surely, 2^55130878 is an apocalyptic number.

55130878 is a deficient number, since it is larger than the sum of its proper divisors (35232002).

55130878 is a wasteful number, since it uses less digits than its factorization.

55130878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4143.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 55130878 is about 7425.0170370175. The cubic root of 55130878 is about 380.5966573122.

The spelling of 55130878 in words is "fifty-five million, one hundred thirty thousand, eight hundred seventy-eight".