51227103228 has 48 divisors (see below), whose sum is σ = 136922655744. Its totient is φ = 14602345920.

The previous prime is 51227103223. The next prime is 51227103281. The reversal of 51227103228 is 82230172215.

It is a super-2 number, since 2×51227103228² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51227103223) 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, 671275 + ... + 743682.

It is an arithmetic number, because the mean of its divisors is an integer number (2852555328).

Almost surely, 2^51227103228 is an apocalyptic number.

It is an amenable number.

51227103228 is an abundant number, since it is smaller than the sum of its proper divisors (85695552516).

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

51227103228 is a wasteful number, since it uses less digits than its factorization.

51227103228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415402 (or 1415400 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The spelling of 51227103228 in words is "fifty-one billion, two hundred twenty-seven million, one hundred three thousand, two hundred twenty-eight".