51227868 has 24 divisors (see below), whose sum is σ = 126563472. Its totient is φ = 16071424.

The previous prime is 51227867. The next prime is 51227879. The reversal of 51227868 is 86872215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51227867) 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, 125355 + ... + 125762.

It is an arithmetic number, because the mean of its divisors is an integer number (5273478).

Almost surely, 2^51227868 is an apocalyptic number.

It is an amenable number.

51227868 is an abundant number, since it is smaller than the sum of its proper divisors (75335604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51227868 is a wasteful number, since it uses less digits than its factorization.

51227868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251141 (or 251139 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 51227868 is about 7157.3645987891. The cubic root of 51227868 is about 371.3944651974.

The spelling of 51227868 in words is "fifty-one million, two hundred twenty-seven thousand, eight hundred sixty-eight".