51775227 has 16 divisors (see below), whose sum is σ = 87662080. Its totient is φ = 29585736.

The previous prime is 51775211. The next prime is 51775249. The reversal of 51775227 is 72257715.

It is not a de Polignac number, because 51775227 - 2⁴ = 51775211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51775191 and 51775200.

It is not an unprimeable number, because it can be changed into a prime (51775027) 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, 136783 + ... + 137160.

It is an arithmetic number, because the mean of its divisors is an integer number (5478880).

Almost surely, 2^51775227 is an apocalyptic number.

51775227 is a deficient number, since it is larger than the sum of its proper divisors (35886853).

51775227 is a wasteful number, since it uses less digits than its factorization.

51775227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273959 (or 273953 counting only the distinct ones).

The product of its digits is 34300, while the sum is 36.

The square root of 51775227 is about 7195.5004690431. The cubic root of 51775227 is about 372.7125390982.

It can be divided in two parts, 5177 and 5227, that added together give a square (10404 = 102²).

The spelling of 51775227 in words is "fifty-one million, seven hundred seventy-five thousand, two hundred twenty-seven".