51010101422550 has 72 divisors (see below), whose sum is σ = 142122959157816. Its totient is φ = 13602693709440.

The previous prime is 51010101422471. The next prime is 51010101422569. The reversal of 51010101422550 is 5522410101015.

It is a happy number.

51010101422550 is a `hidden beast` number, since 5 + 1 + 0 + 1 + 0 + 101 + 4 + 2 + 2 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2099168979 + ... + 2099193278.

It is an arithmetic number, because the mean of its divisors is an integer number (1973929988303).

Almost surely, 2^{51010101422550} is an apocalyptic number.

51010101422550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51010101422550 is an abundant number, since it is smaller than the sum of its proper divisors (91112857735266).

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

51010101422550 is a wasteful number, since it uses less digits than its factorization.

51010101422550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198362284 (or 4198362267 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 51010101422550 its reverse (5522410101015), we get a palindrome (56532511523565).

The spelling of 51010101422550 in words is "fifty-one trillion, ten billion, one hundred one million, four hundred twenty-two thousand, five hundred fifty".