51550227 has 6 divisors (see below), whose sum is σ = 74461452. Its totient is φ = 34366812.

The previous prime is 51550207. The next prime is 51550229. The reversal of 51550227 is 72205515.

It is a happy number.

It is not a de Polignac number, because 51550227 - 2⁷ = 51550099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51550227.

It is not an unprimeable number, because it can be changed into a prime (51550229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2863893 + ... + 2863910.

It is an arithmetic number, because the mean of its divisors is an integer number (12410242).

Almost surely, 2^51550227 is an apocalyptic number.

51550227 is a deficient number, since it is larger than the sum of its proper divisors (22911225).

51550227 is a wasteful number, since it uses less digits than its factorization.

51550227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5727809 (or 5727806 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 51550227 is about 7179.8486752856. The cubic root of 51550227 is about 372.1718552114.

The spelling of 51550227 in words is "fifty-one million, five hundred fifty thousand, two hundred twenty-seven".