51051022542 has 192 divisors, whose sum is σ = 130449481344. Its totient is φ = 14282956800.

The previous prime is 51051022541. The next prime is 51051022553. The reversal of 51051022542 is 24522015015.

51051022542 is a `hidden beast` number, since 5 + 10 + 5 + 102 + 2 + 542 = 666.

51051022542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51051022541) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22223938 + ... + 22226234.

It is an arithmetic number, because the mean of its divisors is an integer number (679424382).

Almost surely, 2^51051022542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51051022542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65224740672).

51051022542 is an abundant number, since it is smaller than the sum of its proper divisors (79398458802).

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

51051022542 is a wasteful number, since it uses less digits than its factorization.

51051022542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523 (or 2520 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 51051022542 its reverse (24522015015), we get a palindrome (75573037557).

The spelling of 51051022542 in words is "fifty-one billion, fifty-one million, twenty-two thousand, five hundred forty-two".