51227243850 has 48 divisors (see below), whose sum is σ = 127058242752. Its totient is φ = 13659020160.

The previous prime is 51227243849. The next prime is 51227243857. The reversal of 51227243850 is 5834272215.

It is a junction number, because it is equal to n+sod(n) for n = 51227243799 and 51227243808.

It is not an unprimeable number, because it can be changed into a prime (51227243857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1910134 + ... + 1936766.

It is an arithmetic number, because the mean of its divisors is an integer number (2647046724).

Almost surely, 2^51227243850 is an apocalyptic number.

51227243850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51227243850 is an abundant number, since it is smaller than the sum of its proper divisors (75830998902).

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

51227243850 is a wasteful number, since it uses less digits than its factorization.

51227243850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39471 (or 39466 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 51227243850 in words is "fifty-one billion, two hundred twenty-seven million, two hundred forty-three thousand, eight hundred fifty".