51227128 has 32 divisors (see below), whose sum is σ = 100661760. Its totient is φ = 24409440.

The previous prime is 51227123. The next prime is 51227149. The reversal of 51227128 is 82172215.

It is a junction number, because it is equal to n+sod(n) for n = 51227096 and 51227105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51227123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15075 + ... + 18157.

It is an arithmetic number, because the mean of its divisors is an integer number (3145680).

Almost surely, 2^51227128 is an apocalyptic number.

It is an amenable number.

51227128 is a deficient number, since it is larger than the sum of its proper divisors (49434632).

51227128 is a wasteful number, since it uses less digits than its factorization.

51227128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187 (or 3183 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 51227128 is about 7157.3129035973. The cubic root of 51227128 is about 371.3926768920.

The spelling of 51227128 in words is "fifty-one million, two hundred twenty-seven thousand, one hundred twenty-eight".