51551521134 has 16 divisors (see below), whose sum is σ = 105617751120. Its totient is φ = 16764722240.

The previous prime is 51551521129. The next prime is 51551521141. The reversal of 51551521134 is 43112515515.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51551521095 and 51551521104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104779269 + ... + 104779760.

It is an arithmetic number, because the mean of its divisors is an integer number (6601109445).

Almost surely, 2^51551521134 is an apocalyptic number.

51551521134 is an abundant number, since it is smaller than the sum of its proper divisors (54066229986).

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

51551521134 is a wasteful number, since it uses less digits than its factorization.

51551521134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209559075.

The product of its digits is 15000, while the sum is 33.

The spelling of 51551521134 in words is "fifty-one billion, five hundred fifty-one million, five hundred twenty-one thousand, one hundred thirty-four".