55230778 has 16 divisors (see below), whose sum is σ = 86697216. Its totient is φ = 26356320.

The previous prime is 55230709. The next prime is 55230821. The reversal of 55230778 is 87703255.

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, 1576 + ... + 10627.

It is an arithmetic number, because the mean of its divisors is an integer number (5418576).

Almost surely, 2^55230778 is an apocalyptic number.

55230778 is a deficient number, since it is larger than the sum of its proper divisors (31466438).

55230778 is a wasteful number, since it uses less digits than its factorization.

55230778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12309.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 55230778 is about 7431.7412495323. The cubic root of 55230778 is about 380.8264055334.

The spelling of 55230778 in words is "fifty-five million, two hundred thirty thousand, seven hundred seventy-eight".